Ambush (Ambush bibliotecus) takes on the appearance of a distorted white face with exaggerated proportions. It has a monstrous, abnormally large oval mouth lined with three rows of inner teeth, [ a set of large, round, black hollow eyes with gray-green bags under them, as well as emitting a green aura, and a smaller pink one which can only be seen on walls, floors and ceilings. Ambush is much faster than Rush and will rebound in an attempt to catch and kill the player off-guard when they least expect it.