Cancer was the youngest Destron, at eleven years old. He was an interesting character, more layered than most villains in Transformers. An orphan with surrogate parents (both a sensei and Mega & Giga), a disciple of the Super Dragon Fist school of martial arts, a proud Chinese national, an unlikely friend to Minerva . . . there were many interesting aspects of his character.
His transform required quite a lot of clean-up work, so a big shout-out to my partner in crime Bill Forster for his hard work.