I understand how it works through elimination. It's very simple to beat it, you just gotta put in a ridiculously obscure character. Of course its gonna guess Robo from Chrono Trigger.
He couldn't guess the dog or the hero from Secret of Evermore, so there...
Quem disse que a boca é tua?
Qual é, Dadinho...?
Dadinho é o caralho! Meu nome agora é Zé Pequeno!