Personality: Reliable, Mischievous, A bit of a troublemaker.
Powers: He can turn invisible, transform into anybody he's seen once and almost perfectly mimic their powers and abilities (For example, superhuman strength would go as far as about 20 times his own and he has to have seen the person in action in order to mimic them properly).
Weaknesses: He'll turn back into himself when someone says "Fiddlesticks" (Though nothing happens when he says it) or steps on his foot. Once this happens, he can't transform into that person again for six minutes. He also has a crippling case of Ifestiophobia.
Backstory: Prior to the incident that lead to the Prince's predicament, he got into a fight with one of Dr. Bleak's high-ranking henchmen. The fight resulted in the loss of his tail via landing kiester-first into a nearby lava pool. He vowed that day that he would find her and bring her and anyone else who works for Bleak to justice.
For those of you who want to know about where this guy comes from, here you go.