Highlander: The Animated Series (1994)

S2E10 Oblivion

Arak seizes the Dundee chieftain, Niel. Kortan opts to wipe Niel's memory and swap him with Malone, making him the new court jester and the living key to Kortan's armory. In a bid to save his position, Malone proposes to assist the trio in rescuing Niel. But can they really count on his loyalty?