NullVA. Azumi Waki

Genius inventor & student.
She rebuilt her sister
as a robot.
Doesn't like going to school.

PetaVA. Reina Ueda

Cares deeply for her sister.
Null's sister who passed away.
Likes cooking, but not so good at it...

Peta (Robo)VA. Reina Ueda

Null's invention, RoboSis.
Makes Null go to school.
Would even go to space if it's for Null!

© TOKYOTOON / Shin-ei Animation