Hydralisk (Warcraft III)

A hydralisk unit is available in the World Editor of III: The Frozen Throne Warcraft III: The Frozen Throne. The hydralisk's attack can clearly be seen - it opens shoulder plates to fire its spines at the enemy (as opposed to firing them from the groove in its lower jaw).

One appears as an Easter egg in the single player campaign of Warcraft III: Reign of Chaos. In the second Night Elves mission, the hydralisk is hidden in the forest north of the final undead camp, almost right next to the site where abandoned ballistas are available for rescue. They can be obtained by using the newly obtained ballistas to destroy trees, then bringing a friendly unit near it. Hydralisks can also be seen in the finale, if the game is beaten in hard mode.