Armadeevil is a rat-faced Nighlok whose existence was unknown to Master Xandred before he came to the ship and offered his services. He merrily went on a rampage, and the Samurai Rangers were unable to cause him any damage due to his armor plating. They were only granted a reprieve by his need to rehydrate. When he returned they were able to weaken his shell, first by tricking him into crashing into a rock wall, then by superheating it and quickly dousing it with cold water afterward to induce thermal shock.