The Tick is a small, spider-like enemy in Doom 3 that has similar attack patterns to the Trite. They appear only once in the Delta Complex, but they come in giant swarms. In Doom 3: Resurrection of Evil, Ticks are encountered several times throughout the game, their last appearance occurring in Hell. The Tick cannot attack you if you're on a significantly higher vertical plane. For example, if a Tick is on the floor, you can render it useless by jumping onto a bunk bed. If closely examined using a cheat, a small humanesque face can be seen on its head.