Overview

Neptune (who represents a fictional SEGA console) is the main protagonist of the HyperDimension Neptunia series. She is the CPU (Console Patron Unit, the leader and protector of their land) of Planeptune, the west region of a set of islands called Gamindustri. Her younger sister, Nepgear, is the CPU Candidate of Planeptune. Her favorite food is custard pudding and least favorite is eggplant. She also breaks the fourth wall and is entirely aware that she's the main protagonist of a franchise.

Normal/Human Form (My Favorite Version)

Neptune is a dorky and quirky girl with an EXTRA THICC sense of justice. She easily makes friends due to this. Also due to this, she's kind of lazy and stubborn. But she never gives up and makes sure her job gets done! Her appearance is shown in the picture above.

Goddess/CPU Form

But this is only her human form, her goddess form is much more mature in appearance and personality. This form, known as Purple Heart, is serious, calm, rational, smart, and overall the opposite of her human form, but retains the sense of justice. However, she still retains her human personality to a smaller extent. Don't search up about this form, kids, you'll be scarred for life.

More

If you want more, check out some of the YouTube videos below (WARNING: Some Videos May Contain Suggestive Content).

https://www.youtube.com/watch?v=wEmWvXqSoro (VR Events: Japanese)

https://www.youtube.com/watch?v=gGut6gcvoAE (VR Events: English)

https://www.youtube.com/watch?v=ChJUOg4lNpY (Basically Nep: Japanese)

https://www.youtube.com/watch?v=-2UiRJSlA8k (Basically Nep: English)

https://www.youtube.com/watch?v=PzKNfU-bBGc (Neptunia & Friends Quotes: English)

https://www.youtube.com/watch?v=fYWGaSe6CSo (This Hilarious Unofficial SFM Animation I Found: English)

https://www.youtube.com/watch?v=a9WFVKBuCqQ (DO NOT WATCH, YOU WILL SUFFER IF YOU DO!!!)