TV-Series
Description
Peashy, known in the Japanese version as Pish and by her goddess name Yellow Heart, is a young child who plays a central role in the anime adaptation of Hyperdimension Neptunia. She is a human child from the Ultra Dimension who appears in the Hyper Dimension as a lost girl and is taken in by the goddess Neptune. She has the appearance of a small girl around five years old, with short blonde hair, oversized hair ornaments, and a brightly colored outfit with unusually large shoes, and she carries herself with boundless energy.

Her background is tied to the conflict between the dimension she came from and the world she arrives in. After she is found wandering alone, she is brought to Planeptune and cared for at its Basilicom, with Neptune acting as her guardian while the oracle Histoire investigates where her real parents might be. During this period she is abducted by the Seven Sages, a group who seek to seize power, and they transform her into a Console Patron Unit, or CPU, making her the goddess of their newly established nation of Eden. As part of this process her memories are tampered with and her mind is manipulated, turning her into a weapon who fights against Neptune and the other CPUs of Gamindustri.

In personality, Peashy is energetic, cheerful, outgoing, and extremely playful. She loves to run around and play, and she is noticeably rough in how she does so, frequently tackling others and breaking objects without meaning any real harm. She is quick to fight back against anyone she sees as a threat, and despite her tough and boisterous behavior she is emotionally sensitive and cries easily. She is not particularly sharp-witted, but she compensates with enthusiasm and a straightforward, affectionate nature. When she transforms into Yellow Heart, her personality remains largely the same, but she embraces battle much more readily and treats combat almost like a game, which makes her transformed state far more dangerous than her childlike demeanor suggests.

Her motivations are simple in her normal state. She wants to play, to be cared for, and above all to be with Neptune, whom she adores and affectionately calls Neptuna. She also has a great fondness for pudding. After the Seven Sages alter her, her actions are driven by their programming and manipulation rather than her own wishes, and she becomes the instrument of their plan to destroy the nations of Gamindustri. Her strength as Yellow Heart allows her to overwhelm the other CPUs, and Eden uses her to threaten the entire world.

Within the story of the anime, Peashy is the emotional center of the arc involving Eden. Her time in Planeptune builds a genuine bond between her and Neptune, and her kidnapping places that bond under severe strain. When Eden declares war and invades, the other CPUs are unable to stop Yellow Heart, and Neptune herself is too upset to fight the child she has come to love. Resolution comes through Neptune facing Peashy directly, refusing to treat her as an enemy even while taking the brunt of her power. Through that confrontation and the strength of their connection, Peashy breaks free of the Seven Sages' control and returns to herself. Afterward she is restored to Neptune's care and eventually sent back to the Ultra Dimension, and her departure is treated as a genuinely painful farewell for those who have grown attached to her.

Her development across the arc moves from lost stranger to beloved family member, then to brainwashed adversary, and finally to a child who is fully herself again. The central theme of her story is how love and memory can overcome manipulation, and her recovery depends on Neptune's refusal to give up on her rather than on superior force. Her notable abilities center on her transformation into Yellow Heart, a goddess form with a far older and larger appearance that grants her massive physical power and combat capability. Even as a small child she is uncommonly strong and capable of rough physical play, but in her CPU form she is a genuine threat to the other goddesses, able to overpower them through raw strength and energy. Her capacity for love and her fierce attachment to Neptune are as defining as her combat power, and both are what ultimately allow her story to end on a hopeful note.