Ages don't matter much. Someone could do an old person that decides to stay as their alien(s) in order to live longer and feel young. Although keep in mind your character's age corresponds to the age of their aliens. So he'll turn into a peak condition and versatile 30-year-old Ripjaws
You should do four separate characters so that there's ten alien hybrids total because ten is an arc number
No ultimate forms
Working on them now
They never used the exact words because it's a kids' show, but that's basically what it boiled down to.
Ah, yes. Generator Rex. The only part of that show I remember is that one episode where the four-armed girl stole that entire town.
