Gargoyles S02E03 - Legion

Coldstone is reactivated, and a program installed by Xanatos causes him to raid a research building and attempt to steal classified information from a computer. But he is infected by a formidable virus which begins to affect his behavior as Goliath tries to get him to join his clan. His mind had been merged with the personalities of two other Gargoyles, and one of them holds a grudge seemingly bigger and more malicious than Demona's.