Hyperdimension Neptunia Wiki
Neptune V2.png

Neptune (ネプテューヌ, Neputūnu), also known as Purple Heart (パープルハート, Pāpuru Hāto), is the main protagonist and titular character of the Hyperdimension Neptunia franchise. She is the Console Patron Unit (CPU) of Planeptune. Neptune personifies a fictional Sega console, although her name was inspired by the Sega Neptune, which combined the Sega Genesis and 32X but was never released[1].

Due to the Neptunia series being a game that revolves around different universes and dimensions, there are multiple Neptune's throughout the series though all of them retain more or less the same personalities and core aspects regardless of the setting.

Hardware Information


Neptune personifies a fictional Sega console, although her name was inspired by an unreleased Sega console, the Sega Neptune[1]. The Sega Neptune was to be a Sega Genesis / Mega Drive combined with the 32X that was meant to be a stop-gap solution until the Sega Saturn was released; it was ultimately cancelled by Sega in October 1995, with Sega citing fears that it would dilute their marketing for the Saturn while being priced too close to the Saturn to be a viable competitor. In the Hyperdimension Neptunia games, Neptune does not personify this unreleased console - it was merely an inspiration for her name.

It should also be noted that unlike the other goddesses in the game, Neptune's console has never been hinted to change, but rather the technology for it simply improves while the console itself remains unchanged.

Another thing to note is that in the first Hyperdimension Neptunia game, for Neptune's second special attack she is seen turning into her console which in turns opens up and becomes a fighter jet that is capable of firing a Wave Motion Canon. In Hyperdimension Neptunia Victory, she is seen assuming the Fighter Jet form again in her Final Hard Form, but this time instead of the Wave Motion Canon she is shown to fire a barrage of missiles. However, during Plutia's Final Hard Form where Plutia becomes a Stealth Bomber, Neptune takes her jet form again and is shown to be firing a Wave Motion Canon alongside her. This shows that Neptune and the other goddesses are capable of assuming forms outside of their normal Human and Goddess forms.

Neptune Console Specs


Conversational Operations: A.I. Model Neptune

It provides various complex support functions via an autonomous A.I. Even a simple auditory command will cause it to automatically configure advanced network settings.

The longer you and the machine work together and communicate, the more it will adapt to your preferences and carry out your requests with minimal error.

  • A.I. Model Neptune was made to emulate a real human as accurately as possible. It is always energetic, optimistic, but this configuration may be difficult to control at times. Please maintain patience with it.

The Sixth Generation Multi-BiOS Chip (512.16THz~)

Features multiple split-core processors and circuitry setups mimicking the precise functions of human DNA.

Please be careful of the follow:

  1. Do not try to raise the clock frequency with supplemental overclocking drugs.
  2. The more the software gets activated, the better the circuitry will acclimate. There is a possibility some redundant tasks may stop being processed even if they were there upon initial boot.

8TB x 16

Processor Memory: The Sixth Generation Neuron Memory (120gn)

There are 1,200,000,000 nervous memory functions embedded in each split-core processor unit.



Direct image output compatible.


8PB x 4

There are four independent drives which constantly back one another up for minimal data loss and frequent disk defragmenting. A total of thirty-two petabytes of storage space is available.


Embedded with Quad PRD (Purple-Ray Disc) Drive

Plays 4D games, audio, and movies, with the ability to simultaneously record them. You can play multi-disc games without replacing discs.


Features Self Auto-Recharging Unit

(50-Year Warranty)

You can use the extra power remaining during Stand-by Mode and apply it to your household appliances.

OUTPUT With the Play Controller, it's able to output information such as movies and music databases, and tickle you.
INCLUDES Play Controller x1, Power Cable x1
DOES NOT INCLUDE Power Cable (Multi-Tap)

Other Appearances



Hyperdimension Neptunia: Megami Tsuushin

Neptune serves as a main character. In Volume 1, Neptune starts off as an immature goddesses casted off of Celestia due to Histoire disapproving of her laziness.

Neptune performs various quests in order to perform her duty of keeping the peace. This includes:

In Volume 2, Neptune and the other goddesses gain the CPU candidates. The tone shifts to as if she always had Nepgear.

She continues to perform various quests in order to keep the peace in Gamindustri, this time with the candidates helping out:

  • Explore the mysteries of Dreamcass Island
  • Stop another one of ASIC's plans
  • Teach counterfeit goddesses what it means to be goddesses
  • Start an idol group
  • Get lots of chocolate through a love potion
  • Thwart ASIC's plans in Pammycom Land

In Volume 3, Neptune awakens Plutia and Peashy, who have no idea why they were awaken. Together, all the goddesses continues to keep the peace and order in Gamindustri. Neptune's other adventures include:

In Volume 4, Neptune discovers the truth about Plutia and Peashy's hibernation and reawakening. In addition to that, she discovers Rei Ryghts who she decides to help out. In doing so, she put Planeptune at risk of takeover with ASIC but with a little bit of help Neptune was able to save her city. In addition to that, Neptune discovers who is behind a series bikini thefts and saves Dreamcass Island from ASIC as Aragami.

Hyperdimension Neptunia The Animation: Hello New World

Neptune serves as a main character.

Chou Jigen Game Neptune: High School

Neptune serves as a main character.


Drama CDs

Moshi Megami Ga Yome Dattara LoveLove Shichau Kamo Shirenai.

On the Moshi Megami Ga Yome Dattara LoveLove Shichau Kamo Shirenai. drama CD, Neptune tries to wake up her husband so she can spend time with him on their holiday off. Despite her efforts in human form, she is unable to get him up so instead she transforms into Purple Heart and tries again for a second time. This time it proves to be successful and then she reverts back to her human form.

Neptune states that she plans the have the two of them play video games all day til the next morning as part spending time together and starts off with a racing game. Due to her moving around so much while playing, her skirt lifts up which causes her husband to be distracted and ultimately lose the race. Neptune is embarrassed by this but ends up forgiving him for staring at her like that.

Having not eaten anything since they woke up, Neptune's husband goes to get something to eat and Neptune requests for him to bring back a cup of pudding while she plays by herself for a bit. When he return, Neptune has him feed her the pudding while she plays but eventually ends up having the spoon jab her on the side of the mouth.

Being in extreme pain from this, Neptune suggests an alternate method to being fed. She sits down on his lap and says that he can hug her and feed her at the same time. Neptune finds herself distracted by his strong embrace and ends up losing the race on the game. Her husband then tells her to get off since she lost, but she blames him for distracting her and says that he have to feed her the rest of her pudding instead.

~Yukemuri Onsen Satsujin Jiken in Planeptune No Maki~

Megami-Tachi Ga Soine Shite Kurechau CD

On the Megami-Tachi Ga Soine Shite Kurechau CD, Neptune promises to stay with "him" until you fall asleep, but she has no idea how to get him to sleep. She suggests counting kangaroos because for a long time whenever she did it she would fall asleep more easily. However, when she does this she slowly begins to fall asleep herself and begins to dream about pudding.

When she is hit on the head, she wakes up and says that she felt so warm and secure that she ended up drifting off to sleep. She then gets the idea to hug him under the impression that feeling her close to him would make him feel secure and thus lull him to sleep in no time at all. Though, this idea doesn't work in the least. Neptune assumes that his heart is beating really fast and that's why he can't sleep.

For her next idea, she suggests that he hug her instead as if he's hugging a pillow, but forbids touching her anywhere weird. Eventually he stops hugging her, believing that it's like embracing a kid and it feels wrong somehow. This upsets Neptune and she decides that she has no other choice but to transform into Purple Heart.

Purple Heart comments on how docile he's suddenly become now that she's in her goddess form and wonders what would happen if she hugged him. She comments on how he still feels warm even when she's transformed, but now that she's in goddess form she can feel his warmth multiple times compared to her small body in human form. She says that she's only doing this for him because he's special.

He asks for her to release him but you because now he can't sleep due to his heart beating. Instead she says that now that she's gotten into the mood she has no intention of letting him go and wants to hug him all night, forever and ever. After he falls asleep for a few minutes, Neptune reverts to human form and begins saying "Boing, boing, like a kangaroo" over and over again and says that she told him she had no intention of letting him sleep that night.

Bouken De○○sa Re Chau CD

"Neptune Ga Kastu Wo Irete Kureru" Plus "Neptune Kakugen-Shuu"

Megami To Tsuitachi Sugosu CD

Non-Neptunia Appearances

  • Neptune-Nepgear yPhone skin.png
    Touch Shot! Love Application: Neptune makes an appearance in the game as part of a custom skin that can be used on the main character's yPhone. The skin features both her and Nepgear from Hyperdimension Neptunia mk2 and uses their Gamipics as part of the icons on the protagonists phone while the wallpaper of the phone is taken from the official wallpaper from Hyperidmension Neptunia mk2 that features both Neptune and Nepgear.
  • Mugen Souls: Neptune's clothing is available for peons and characters via downloadable content that can only be obtained from a DLC Code in one of the Dengeki PlayStation magazines. The DLC pack is included in the game's PC version for all regions.
  • Akiba's Trip: Undead & Undressed: Neptune appears as a cameo on one of the billboards, promoting the Blu-Ray release of the anime. Purple Heart cameos in the game as part of the Hyperdimension Neptunia Set downloadable content in the form of the "Neptunia Hug Pillow" weapon and "Neptunia T-Shirt".
  • Mugen Souls Z: As part of the Overwhelming Game's Triple Goddess Costume Set downloadable content, the player can obtain equipment that can allow Peons to dress up and resemble Neptune. This DLC pack includes, Neptune's entire Parka Dress outfit, her hairstyle, her face, and a portrait of her.
  • Monster Monpiece: As a two stage card that shifts between her human and goddess forms.
  • Fairy Fencer F: Neptune makes an appearance as a DLC accessory for Fang, the protagonist of the game. The accessory is Neptune as a plush-toy clinging to Fang's arm.
  • Phantasy Star Online 2: One of the items that were available during the collaboration event for Superdimension Neptune vs. Sega Hard Girls was a Purple Heart costume.
  • Ange Vierge: As part of a collaboration event gacha with the other goddesses.
  • Million Arthur: In a number of collaboration event gachas alongside other characters in Neptunia.
  • Aura Kingdom: Neptune's costume, along with other goddesses, were made available as part of a collaboration.[2]
  • Gun Gun Pixies: As a guest character.
  • Azur Lane: As one of the obtainable characters in the game as a collaboration, along with other goddesses.
  • Trillion: God of Destruction: Neptune and the other CPUs appear in a DLC event, where she and the other CPUs get accidentally sent to their world.
  • Senran Kagura Peach Beach Splash: Neptune is one of the guest characters set to appear as DLC as part of a collaboration.[3]
  • Spelunker World: Players can dress up their character as Neptune as she appears in Cyberdimension Neptune: 4 Goddesses Online by equipping the corresponding head and body gear.[4]
  • AzurLane-Neptune.png
    Azur Lane: Crosswave: As a playable DLC character in the game as a pre-order bonus. Neptune was later made as a free DLC a few days for the Western version when it was released, before becoming paid DLC. Neptune's voice can also be heard in the story as Shimakaze's alarm.(her appearance does have some slight changes that look cool as shown in the picture)
  • HG2 Playable Neptune.png
    Houkai Gakuen 2: In Houkai Gakuen 2 CN as part of crossover, player can obtain Purple Heart Sword, Neptune's 4 Goddesses Online outfit and Neptune Doll through crystal gacha, Ultra Dimension Neptune familiar through familiar gacha (in very short time), Neptune badge through egg dealer, while herself as a playable character + 3000 crystals bundle must be bought through Activity Package which is priced 258 yuan (way cheaper than 328 yuan 3280 crystals).[5]
    Neptune was also the first custom character featured as event egg dealer instead of Ling Yi as usual as Neptune badge awaken use same image.
    Player can also awaken the sword and badge to unlock animated main menu background which she can initiate a random line of dialogue.
    In 7.3 update Hyperdimension Link II collab, all of her gears returns and character model was sell in bundle again. This update is also increase Purple Heart Sword overall damage by over 100% as the weapon itself is hard to synergize with other gears and seems to be weaker than Noire's Black Heart Sword.
  • Date A Live: Spirit Pledge: As a playable spirit and sephira as part of a 2-part collaboration, along with other goddesses.
  • Shachibato! President, It's Time for Battle! Maju Wars: As a playable employee as part of a collaboration.
  • Senran no Samurai Kingdom: As part of a collaboration, Neptune is a playable character along with other goddesses.[6]

Musical Themes

Audio samples do not work on iPad or any medium that does not support the .ogg audio format.

Name Game Description Audio
Smile Spiral Hyperdimension Neptunia mk2 Neptune and Nepgear's character song duet for the Hyperdimension Neptunia mk2 Hyperdimension Neptunia Duet Sisters Vol.1 album.
Lady Cool ~ Purple Heart Purple Heart's solo song.
Smile Spiral_Remix A remixed version of Smile Spiral released on the Hyperdimension Neptunia Share Complete Discs set.
Purple Heart's Theme Hyperdimension Neptunia Victory In Hyperdimension Neptunia Victory, Purple Heart has her own theme composed by Nobuo Uematsu's Band, the Earthbound Papas. It notably serves as the main boss battle theme for the first half of the game and occasionally plays in cutscenes.
Fly High! Neptune's first song on the Hyperdimension Neptunia Shugo Megami Character Song CD Vol.1 album
Purple Energy Neptune's second song on the Hyperdimension Neptunia Shugo Megami Character Song CD Vol.1 which is preformed by her goddess form.
Fly High! (idol dance ver) Hyperdimension Neptunia: Producing Perfection In Hyperdimension Neptunia: Producing Perfection it is a remixed version of Fly High!.
With Confidence (idol dance ver) Neptune's version of Noire's song.
HP ∞ LOVE Power (idol dance ver) Neptune's version of Vert's song.
Dear... every day (idol dance ver) Neptune's version of Blanc's song.
Mira Infinity The final song unlocked in Hyperdimension Neptunia: Producing Perfection. It was later released on the Hyperdimension Neptunia Share Complete Discs set with both a solo version and a group version with the other CPUs.
Dreaming At Full Power A bonus song for that was only available on the Hyperdimension Neptunia Share Complete Discs collection.
Perfect Purple Hyperdimension Neptunia U: Action Unleashed Neptune and Nepgear's theme which plays whenever either transforms.
Mousou 4tune Megadimension Neptunia VII The opening song for the Hyper Dimension Neptunia G arc. Neptune sings this with the other three Hyper Dimension CPUs.
Mousou Katharsis The opening song for the Heart Dimension Neptunia H arc. Neptune sings this with Orange Heart.
Peaches & Cream Meditation Folk Song Neptunia x SENRAN KAGURA: Ninja Wars The folk song used for the Peaches & Cream Meditation mini-game in Neptunia x SENRAN KAGURA: Ninja Wars. Neptune sings this with Asuka and Yuuki.

Creation and Development

Neptune original look.png

In an interview with the character artist for the Hyperdimension Neptunia series, Tsunako, it is revealed that Neptune was not originally intended to be the main character. Tsunako was working with a different name and concept with Noire serving as main protagonist and the three heroines being Noire, Blanc, and Vert. She was asked to draw a few other character samples and one which was very well received was Neptune's original look. This led to the creation of Neptune as a new main protagonist.

Neptune's original look was drawn with the idea of the Roman god Neptune, the king of the sea that is her namesake. Blue was the key color, and according to Tsunako the look gives a mysterious impression.

Next Form

NepVII-SE Cover Art.jpg

Tsunako comments that during the development, the attire Purple Heart wears in Next Form became a suit which depicts the evolution of the next generation, and an image of growth. A "V"-like symbol was used for the lines of the neck and the buttocks. It became a feeling of a splendid black brightened by purple, and when it was assimilated in the hair, it could also be called the motif of the planet Neptune itself.

She states that she has used light blue as luminescent color before, but this time this has been taken over, blending the pink hue of the clear area with a luminescent blue which gives the feeling of everything being purple at first glance.[7] The hairstyle changed by having a polarized color and by unwinding the braid from the middle. Tsunako says it took her in total approximately half a year to come up with the design, including the preparatory work on the Next Form itself, temporarily stopping work to restart from scratch, while working on other projects at the same time.[8]

In 2012-13, the concepts for the Next Forms were drawn. In October 2014, an illustration of Tsunako's Purple Heart Next Form was released.


Her name is ultimately based of the unreleased home console, the Sega Neptune.


  • Neptune is the only CPU who is based on a fictitious console (though the Sega Neptune, which was essentially a standalone version of the 32X addon for the Sega Genesis, was planned to be released, but ultimately cancelled upon the release of the Sega Saturn). Noire, Blanc and Vert are originally based on 7th generation consoles, while the last Sega home console is the 6th generation console Sega Dreamcast. Because it would be impossible for Planeptune to compete with the other nations if their CPU is based of an old console, a fictitious 7th generation Sega console had to be created. Since Hyperdimension Neptunia Victory, the other three CPUs represent all home consoles from all generations, while Neptune does not. Instead, the different versions of Planeptune from different dimensions have different CPUs based on real consoles from the past. However, Neptune's Next Form represents the fictitious 8th generation console of Sega to compete with the other Next Forms that are based on real 8th generation consoles.
  • Neptune's personality in the localized version of the games and the original Japanese version of the games are quite different. While the localized version portrays her as silly and somewhat hip girl with a weird way of speaking, The Japanese version portrays her as somewhat spunkier girl who acts silly most of the time but can also be serious. It can be said that her personality in the localized version of the series is a highly exaggerated version of her original Japanese counterpart.
  • Neptune's name is referred to as "Fictitious Hard" (Hard being short for Hardware) by the creators.
  • The creator's favorite character in the series is Neptune, due to her being "energetic and bright to the point of idiocy". Even in the darkest situations, she still makes happy and positive comments.
  • The DLC costume Smile Spiral from Victory is a reference to the song called Smile Spiral that Neptune and Nepgear sing on the Hyperdimension Neptunia Duet Sisters Vol.1 CD. another thing to be noted is that the song Smile Spiral also appears in the Japanese idol DLC cutscene in the Japanese version of Victory, where Neptune and Nepgear sing Smile Spiral.
  • In Victory, it is revealed Neptune doesn't like eggplants. The reason as to why is, according to Neptune, because they turn your eyes purple, even though Neptune's eyes are already purple. This strange phobia affects Neptune to the point that it can be used as a sort of kryptonite, and has been done so by Arfoire. However, if the eggplant is modified in some way so it no longer resembles an eggplant (like being extremely enlarged), Neptune won't be phased by it.
  • Up until a certain part of Victory, Neptune didn't know what her HDD form looked like. This is mostly because said form is only used for battle and Neptune states she isn't the type to transform and just stare at mirror, saying Noire's more likely to do that. Though strangely enough, there is proof that Neptune knew what she looked like in HDD. The very beginning of the game has Neptune rewatching an old music video starring herself (and Nepgear) in HDD. But, it can easily be justified by saying that Neptune simply forgot, like she did with Arfoire earlier in the game, or she only pretended not to know as, when she saw a copy of HDD form, she proceeded to call the copy a very stylish and hip stranger.
  • In the 2011 Neptunia popularity poll, Neptune ranked in second place.[9] First went to Noire, a fact that was referenced and made fun of in Victory where Neptune, upon hearing of Noire's fandom, is immediately overcome with jealousy and begins calling Noire "Popular Heart" in a mocking way. 
    • In the 2014 Neptunia popularity poll, Neptune ranked in third place, behind Blanc, who was the winner, and IF, who ranked second place.[10]
    • In the 2022 Neptunia Great Thanksgiving poll, Neptune ranked in first place on the following categories:[11]
      • Which character do you want to "Nep-Nep"?
      • Which character do you want to be friends with?
      • Which character do you think is a "true hero"?
      • Which character did you fall in love with?
      • What is your best character duo? with Noire
  • In the first Hyperdimension Neptunia, when using Neptune Break, occasionally Neptune can be heard saying "up up down down left right" more than half of the "Konami Code" but then realizing she has no use for it, and she stops. 
  • Out of the original four Goddesses, Neptune was the only one that didn't have a color-themed name.
  • In Victory, episode 7 of the anime, and Hyperdimension Neptunia Re;Birth 1, Neptune's favorite food is said to be custard pudding.
  • In the first Hyperdimension Neptunia:
    • Neptune references one of Optimus Prime's Catch Phrases, when she says "Transform!" and "Roll out!"
    • When Neptune enters a battle sometimes she will reference Sailor Moon, when she says "Pretty Mysterious Neptune of Love and Justice! In the name of the Basilicom, I'll punish you!"
  • Unlike the other CPUs from the other three nations, Neptune's outfit does not have a regal theme, but has a very casual design. This trait is shared with the other two CPUs from the alternate Planeptunes.
  • In the Hyperdevotion Noire Drama CD, Vert describes Purple Heart as a kuudere, despite she does not fit the stereotype by standard definition.
  • During one of the Nepstation segments in chapter 7, Neptune and Uni make a Pretty Cure reference, with Neptune saying that "she totally loved it when Shiny Voluminous showed up". This is a reference to her Japanese voice actress's role as Shiny Luminous.
  • In the prologue of Re;Birth3, Neptune is able to mimic the voice and personality of her goddess form perfectly.
  • The gun that the Ultra Dimension Neptune uses in combat is the same gun that Neptune uses for her ranged attacks in the original Hyperdimension Neptunia.
  • In the official website of Megadimension Neptunia VII, it tells how the older Neptune seeks unusual insects. One part that shows that Older Neptune is the Neptune in the True Ending of Hyperdimension Neptunia Victory is that she caught Croire, whom she thought was a bug.
  • In both the Japanese and English dubs of Victory, her voice was higher-pitched, showing that she was a child at the time.
  • In Victory, the CPUs joke that without the abilities of HDD, Neptune would've likely starved to death. When Nepgear and Uzume meet the older Neptune, she has actually run out of food.
  • In Cyberdimension Neptunia: 4 Goddesses Online, Neptune mentions her shoe size is 22.5 cm, roughly the length of two game cartridges for the Sega 32X, one of the console components for the planned Sega Neptune.


  1. 1.0 1.1 Rednal(November 20, 2012).Interview: NISA on Hyperdimension Neptunia Victory(English)pp. 1. Ariablarg.tv. Archived from the original on November 8, 2013.
  2. 幻想神域×超次元ゲイムネプテューヌ コラボ特設ページ(Japanese)(February 2017). Archived from the original on February 28, 2017.Retrieved on May 12, 2022.
  3. http://senrankagura.marv.jp/series/kaguraPBS/guide/product_dlc.php?dlctab=10#dlc10
  4. https://twitter.com/IdeaFactoryIntl/status/1017821190633676801
  5. https://webstatic.mihayo.com/bh2/event/e20190821neptune/index.html
  6. 「戦乱のサムライキングダム」にて「超次元ゲイム ネプテューヌ」とのコラボキャンペーンを開催!(Japanese)pp. 1. MYNET(June 30, 2021). Archived from the original on June 30, 2021.Retrieved on July 6, 2021‎.
  7. xizro345(June 27, 2014).Re: Shin Jigen Game Neptune VII announced! (coming to PS4)(English). NIS America Forums. Archived from the original on November 5, 2015.
  8. xizro345(June 27, 2014).Re: Shin Jigen Game Neptune VII announced! (coming to PS4)(English). NIS America Forums. Archived from the original on November 5, 2015.
  9. キャラクター人気投票企画「ゲイムギョウ界大選挙!!」結果発表(Japanese)pp. 1. Compile Heart(October 2011). Archived from the original on October 22, 2011.Retrieved on May 13, 2022.
  10. ゲイムギョウ界総選挙|超次元ゲイム ネプテューヌ(Japanese)pp. 1. Compile Heart(December 2014). Archived from the original on December 25, 2014.Retrieved on May 13, 2022.
  11. ねぷねぷ大感謝祭(Japanese). Compile Heart(April 28, 2022). Retrieved on May 13, 2022.