Peta

Peta is Null's sister that passed away. She is a main character in the Null & Peta series that likes to cook, but is known for her notoriously awful cooking. Peta has purple, long hair tied into twin tails.

~!It was initially thought that Peta was struck by the car, but it happened to be Null. Peta had created a virtual world that Null could remain during her unconsciousness. The virtual version of Peta (the robot) is her way of communicating with her sister. !~