|“||Nope, you can't be more popular than me. I mean, I'm the main character of this franchise and stuff.||”|
The main character of the Hyperdimension Neptunia series. She is the CPU of Planeptune and older sister of Nepgear. In her human form she looks and acts young, but when she activates HDD she becomes much more mature in both appearance and personality.
Neptune is a short girl that appears to be in her pre-teens. She has short lilac hair with bangs that reach down to her collar bone and purple eyes. In her hair she wears white hairclips in the shape of D-pads and around her neck is a choker that has a light blue D-pad symbol on it. She wears a mostly white hoodie dress that has a light purple hood, strings that look like controller plugs, and two huge purple and white pockets with purple D-Pad symbols on them. The sleeves have two light blue strips going all the way down while the front of the hoodie only contains one. The ends of the sleeves and the bottom of the hoodie have dark and light purple stripes. The zipper emblem and the back of the hoodie has a purple letter "N" to represent the first symbol of her name. She wears light blue and white striped thigh high socks with frills at the tops and her shoes are purple and blue.
Neptune wears a a choker around her neck with a light blue D-pad symbol on it and short sleeved mini hoodie with blue and purple lining around the sleeves and the hood. The hoodie is closed by a button emblem with a large N in the middle and has two strings that look like controller plugs. Underneath she wears a dark purple dress lined with light purple which zips up from the front and has pockets on both sides along with white lining along the bottom. Her socks are light blue and white striped thigh high socks with frills at the tops and her shoes are purple and blue with an N on them.
Neptune is a happy, excitable girl with a very strong sense of justice. Her ditzy personality causes her to be very careless at times which can either help her or land her into serious trouble. She makes friends rather easily due to her friendly nature and often gives them cute nicknames. People admire her optimistic outlook and confidence. She never gives up or backs down when the going gets tough and she makes sure to see her objective through to the very end.
Purple Heart has long purple hair in twin tails that almost reaches her feet and bright blue eyes with white pupils in the shape of power signs. She wears black hair clips with glowing blue D-Pad shapes on them, and a black body suit that exposes her chest somewhat. Both of the bodysuit's shoulder areas contain a white outlined D-pad symbol and the arm areas contain purple along the sides while the front of the bodysuit also contains purple areas near the bottom. On the breast areas you can see a single purple strip. Purple Heart's leg-wear seems as though it is the same as her human forms only it appears as black boots with purple tips instead.
Lost Purple CoreEdit
Purple Heart's appearance in her Lost Purple Core is reminiscent of the Purple Core but with much more stylization and design. Her hair and hair clips remain the same while her bodysuit, while still black, has purple and blue lining all around the torso and arms. The middle of the torso has purple mesh, allowing a vague vertical view of her stomach. She also wears thigh high boots with octagon patterns on the side at the very top; one filled it with purple and another just a white outline.
Purple Heart is a serious and mature person. She's often calm and rarely changes facial expressions. She is a very observant and intelligent female, thinking in a rational matter most of the time. She is the complete opposite of her human form in many aspects but her strong sense of justice and confidence remains unchanged. It can be said that Purple Heart is a bit arrogant, having a strong confidence in her abilities and believing that no one can defeat her. Despite her change in personality, there are times that where Purple Heart acts like her human form, evident when Neptune turns into Purple Heart just to ride a roller coaster.
For a full synopsis, see the main article Neptune (Purple Heart)/History
In the beginning, Purple Heart is in all out battle against the other three CPUs. Knowing that they would not be able to defeat her easily by themselves, the three decide to join forces and defeat her together which results in her being banished to the world below. It is then where Histoire calls out to her and asks for her help.
When she wakes up in her human form, Neptune, she is greeted by a nursing student that goes by the name of Compa. After introductions the two head to a dungeon where they retrieve the Planeptune Key Fragment and learn of what they need to do in order to rescue Histoire.
As they journey around Planeptune they meet another girl by the name of IF who is a guild member. After explaining their situation to her, the young girl decides to join them on their quest to collect the Key Fragments, feeling that they would be doomed to fail otherwise.
The group travels to each landmass in search of the Key Fragments required to break the seal that is holding Histoire captive. Neptune and her friends are attacked several times by the CPUs of each nation while they are in their goddess forms and helped by them while they are in their human forms.
After collecting the Key Fragments and finally releasing Histoire, Neptune regains her memory and recruits the other goddesses to help her take down Arfoire. Once this task is complete, Neptune and the other goddesses remove the remaining monsters from the world and give up their powers as CPUs.
Hyperdimension Neptunia mk2Edit
In the prologue, Purple Heart and the other three CPUs are fighting against CFW Magic and are easily defeated and captured. After the efforts of Nepgear and the CPU Candidates, she and the others are finally freed and join the party to defeat ASIC and restore order to Gamindustri.
Neptune assists in a number of events after her rescue, such as saving Nepgear and the others after their defeat from CFW Magic, destroying the Arfoire Factory, Defeating the CFWs and most importantly helping in the destruction of CFW Arfoire. After peace is finally restored to Gamindustri, she and Nepgear go about their daily lives in happiness.
Hyperdimension Neptunia VictoryEdit
Neptune retakes her role as the main character and is thrown into another dimension known as the Ultradimension by Rei Ryghts. There she meets a girl named Plutia who claims to the CPU of Planeptune in that dimension as well as the Ultradimension counterparts of the Hyperdimension CPUs.
Neptune goes through a number of trials in the Ultradimension while trying to find a way to return home as well as trying to help save both Gamindustri's. Upon her arrival in the Ultradimension she finds out that she is unable to activate HDD and transform into her goddess form. When she uses the CPU Memory along with Noire she manages to become a CPU again.
During the course of the game she fights against the Seven Sages who wish to create a world free from goddess rule and also Rei Ryghts who intends to destroy both the Gamindustri of the Hyperdimension and the Ultradimension at the same time. Thanks to the combined power of all the CPUs, they just barely manage to defeat her and save both Gamindustri's.
At the end of the game, the portal between both worlds remains open time begins to move at the same pace for both dimensions. Neptune and Plutia continue to play together by using the portal to go to the other's dimension and peace finally returns to Gamindustri.
Hyperdimension Neptunia Victory IIEdit
Hyperdimension Neptunia Re;Birth1Edit
Hyperdimension Neptunia Re;Birth2: SISTERS GENERATIONEdit
Neptune's role in Hyperdimension Neptunia Re;Birth2 is more or less the same as Hyperdimension Neptunia mk2. She and the other CPUs are defeated in the Gamindustri Graveyard by CFW Magic and three years later Nepgear is the only one to escape thanks to IF and Compa's assistance. Nepgear embarks on a journey to save Neptune and the other CPUs and eventually does so after gaining the aide of the CPU Candidates and Mascot Characters. Now free, Neptune and her CPU friends join forces with the Candidates and Makers to defeat ASIC and stop Arfoire. They are successful in their mission and subsequently destroy both Arfoire and the Gamindustri Graveyard. With the world saved, Neptune and Nepgear return to their daily lives.
Hyperdimension Neptunia: Producing PerfectionEdit
Chou Megami Shinkou Noire Gekishin Black HeartEdit
Hyperdimension Neptunia UEdit
Hyperdimension Neptunia: The AnimationEdit
In Hyperdimension Neptunia: The Animation Neptune and the other CPUs form a friendship treaty to prevent the act of taking another nation's shares by force. Neptune and the others learn of the existence of the Anti Crystal which has the power to negate a goddesses share power and turn it into anti-energy. They eventually find themselves in a trap by Arfoire to kill the CPUs using the power of the Anti Crystal. However, Neptune and the other CPUs are rescued by the CPU Candidates.
Later on, Peashy arrives in their dimension and she and Neptune form a bond. When Peashy is kidnapped and turned into a CPU by Anonydeath and Rei, she finds herself unable to fight against her due to her being Peashy. She decides to not use violence to fight against Peashy and as the machine that is supplying Peashy's power is destroyed, she reverts back to human form. Despite Neptune's efforts, Peashy does not remember who she or anyone else is. It isn't until Peashy is being transported home with Plutia that she suddenly remembers Neptune and utters her name which surprises Neptune.
After these events, Planeptune's shares experience a sudden increase while the other nation's fall. Neptune holds an event at the Planeptune Basilicom to celebrate, inviting the other CPUs as well. However, they all refuse. Neptune is called out by Blanc to a secluded location during the event and is not only attacked but accused of stealing the other nation's shares. Rom and Ram appear and stop their fight and Blanc warns Neptune of a possibility of war if she continues to ignore the situation of the Share distribution.
When Rei breaks out of her prison, a large landmass arises out of the ground in Planeptune. Rei, now in her goddess form, claims that the nation is Tari and Neptune rushes to the scene. Rei threatens to fire a laser on Neptune, but Planeptune's CPU holds her ground. Changing her target, Rei aims the weapon at Planeptune's Basilicom and fires, splitting it in half which cuts Planeptune's communications off. Neptune struggles against Rei, but soon enough the other CPUs and the CPU Candidates arrive to help her. Together they work together to defeat Rei and manage to win.
A few months after the events regarding Rei, everything is restored back to normal and Planeptune's damages are in the process of repair. A ceremony is held at the repaired Planeptune Basilicom. In the end, Neptune revokes the friendship treaty, stating that the CPUs have achieved true friendships between each other.
If A Goddess Was Your WifeEdit
On the If a goddess was your wife Drama CD Neptune tries to wake up her spouse so she can spend time with them 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 spouse to be distracted and ultimately lose the race. Neptune is embarrassed by this but ends up forgiving them for staring at her like that.
Having not eaten anything since they woke up, Neptune's spouse goes to get something to eat and Neptune requests for them to bring back a cup of pudding while she plays by herself for a bit. When they return, Neptune has them 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 their lap and says that they can hug her and feed her at the same time. Neptune finds herself distracted by their strong embrace and ends up losing the race on the game. Her spouse then tells her to get off since she lost, but she blames them for distracting her and says that they have to feed her the rest of her pudding instead.
The Goddesses will Sleep with YouEdit
On the The Goddesses will Sleep with You 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 bonked on the head she wakes up and says that she felt so warm 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 not 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 you 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 tonight.
Creation and DevelopmentEdit
Purple Heart's Next FormEdit
Tsunako comments that during the development, the attire Purple Heart wears in Next Form became a suit 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.  The hairstyle changed by having a polarized color and by un-wounding 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.
Fictitious Hardware SpecificationsEdit
|OPERATING SYSTEM||Conversation Operating System: AI Neptune Model. Capable of offering a variety of support using its AI. Simply state your desire and it can perform such things as complex network settings. As you use it, it will come to understand your likes and will offer better support.|
|PROCESSOR||A sixth generation multi bio chip operating at 512.16THz. Using an ecology core unit, it's able to form appropriate pathways. This ecology core unit becomes capable of forming better pathways as you run a variety of software. It is recommended that you do not use energy drinks and toppings to increase the clock speed.|
|MEMORY||8TBx16 main memory and 120gn sixth generation neuron memory embedded in the processor. The ecology unit has 120 billion nerve cell memory units.|
|GRAPHICS ACCELERATOR||SFHD-X7250 GPU compatible with direct image output.|
|STORAGE||8PBx4. Realizes 32 petabytes through four drives.|
|MEDIA DRIVE||Quad PRD (Purple-Ray Disc) Drive. Capable of games, sound media playback, movie media playback and recording. Multi disc games can be played with no need to swap discs.|
|POWER||Self power unit with life expectancy of 50 years. During standby mode, can power old household appliances.|
|OUTPUT||Outputs a variety of information, including video, audio and shocks, through a Brain Wave Controller.|
|ACCESSORIES||Includes one Brain Wave Controller and one socket.|
|OPTIONAL ACCESSORIES||>Socket (multi-tap)|
Touch Shiyo! Love ApplicationEdit
Along with the other Hyperdimension CPUs and Candidates, Neptune makes an appearance in Touch Shiyo! Love Application as a DLC wallpaper image for the protagonist's yPhone alongside Nepgear. The image used for the wallpaper was taken from the official wallpaper for Hyperdimension Neptunia mk2 that features both Neptune and Nepgear.
Mugen Souls & Mugen Souls ZEdit
In Mugen Souls and Mugen Souls Z, Neptune's Parka/Hoodie dress is an available upper body costume in the Overwhelming Triple Goddess DLC Costume Set. Noire, Blanc, and Vert also have their costumes in the game.
Neptune makes a cameo appearance in Monster Monpiece as a two stage card that shifts between her human and goddess forms. She is the only Hyperdimension Neptunia character to make an appearance in this game.
Neptune's name is derived from the never released Sega Neptune that was a two-in-one Sega Mega Drive/Genesis and Sega 32X console that Sega planned to make.
- 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 is not the absolute personification of the Sega Neptune but rather an imaginary console based on the Sega Neptune. This could be why her console is referred to as "Fictitious Hard" (Hard being short for Hardware) by the creators.
- Hyperdimension Neptunia's creator favorite character 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 Neptunia 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 Neptunia 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 Nep'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.
- In a popularity poll, Neptune earned the spot of second space. 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 first Neptunia. when using Neptune Break, occasionally Neptune can be heard saying "up up down down left right" more then 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 and episode 7 of the anime, Neptune's favorite food is said to be Custard Pudding.
- in the first Neptunia. Neptune references one of Optimus Prime's Catch Phrases, when she says "Transform!, and roll out!"
- In the first Neptunia. 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!"