When Captain Shuggazoom left the Alchemist's home, he was already transforming into Skeleton King. And the 'Hyperforce', just normal monkeys by then, were witnesses how his body slowly degraded, before he changed them into cyborgs and erased their memories. Could they have fled should the Alchemist have become violent towards them? WAS he once or sometimes, when Skeleton King realized the Alchemist would want to make them into a force capable of opposing him? We don't know and that is the most terrifying about this time.