Choose which personality of the Cursed Ettin to be in control at the start of the game. At the end of any phase in which the Cursed Ettin has suffered a Wound, it must take a LD test. If passed, the Cursed Ettin retains its current personality, if failed the other takes over.
The effects of the two separate heads are:
The Betrayer: The Cursed Ettin has Hatred and Bitter Cruelty.
The Savage: The Cursed Ettin has +1 S, -1 WS, -1 LD, Frenzy.