An Assassin is a special type of character. He begins the game hidden in one of the following units: Dark Elf Spearmen, Dark Elf Crossbowmen, Black Ark Corsairs, Shades, Witch Elves, Har Ganeth Executioners, or Black Guard of Naggarond. Make a note of which unit the Assassin is hiding in.

A hidden Assassin is not placed on the table during deployment, but is revealed later in the game. If his concealing unit is wiped out or flees from the battlefield before he is revealed, the Assassin is also lost and counts as a casualty. There is no other way the Assassin can be harmed before he is revealed.

Hidden Assassins may be revealed at the beginning of any of your turns, or at the start of any Close Combat phase. Declare that the unit contains an Assassin and place the model in the front rank. Displace a rank-and-file model to make room for the Assassin. If the unit is in close combat, the Assassin displaces any rank-and-file model in the unit that is in contact with the enemy. If there are no rank-and-file models to displace in a suitable position, a command model or character must be moved to make room for the Assassin.