Ben 10 (Classic)
Ghostfreaked Out
S2 E11:
Ben's internal demons get externalized when Ghostfreak escapes from his watch and becomes a full fledged being on his own. The renegade alien then realizes he needs to meld with Ben's DNA in order to survive, while Ben must figure out a way to get Ghostfreak back in the watch.
Starring
Kath Soucie