The BEST seasons of Null & Peta

Every season of Null & Peta ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Null & Peta!

Girl genius "Null" has just lost her beloved big sister "Peta" in an accident. But don't you worry! She'll just use her naturally gifted intelligence to bring her big sister back as a robot! But is her newly-revived big sister just a little different than before?