I'd tell you Greg was actually an allegory to his true identity... Which is actually a humanzee, the genetic cross between humans and monkeys... Yes, monkeys. Hopefully not small monkeys, because the thought is quite disturbing.
Wwydi there was a volatile concoction that, when drank, had a 33% to kill you, 33% to horribly disfigure you, and 34% to give you whatever super powers you could possibly imagine right before drinking it? Would you drink it?