You’re the Fourth Tamagami created by the namekian, Neva. You can appear before the three dragon balls are used. Dr Arinsu is a kai from one of the three demon worlds. Her creation, Majin Duu managed to beat the first Tamagami. After Glorio gave Arinsu the other two dragon balls, she was about to summon the dragon, but then you appeared before Arinsu and her two creations, Majin Kuu and Majin Duu.

“Majin Duu! Attack and I’ll get you all the chocolate you want!” Just as Arinsu commanded Duu to attack you, you raised your hand, and Duu stopped in his tracks