Tick (Doom 3)

The Tick is a small, spider-like enemy in Doom 3 that has similar attack patterns to the Trite. They rarely appear, but they usually come in giant swarms, like they do just after you return from Hell to Delta.

The only real differences between Ticks and Trites is the model, skin, and sounds used. Ticks also burn away like normal demons; Trites explode with spider juice.