Episode 5.5: "The Fifth Horseman"

Ep 5 - The Fifth Horseman: http://www.tudou.com/playlist/playindex.do?lid=3219407&iid=10089277&cid=9

Fabian Cortez kidnaps Jubilee because Apocalypse is trapped in Astral Plane and needs a host body. Cortez brings her to a temple, but Beast comes and rescues Jubilee and destroys the temple. At the end, when Apocalypse comes out of a portal, he takes over Cortez's body, transforming it into his form and banishing Cortez from it.