He looks like a normal toon, the only difference being his grunge and rust, along with his "Pie-Cut-Eyes"
He starts in the Storage Room, and then exits, and heads to the Staff Area, and then the Meat Freezer, goes to the lounge, and then goes to the office. He cannot kill the player, but instead, will break the camera. Rendering the player hopeless.
Ancient Mickey in Cam1
Ancient Mickey in Cam2
Ancient Mickey in Cam4
Ancient Mickey in Cam 6, notice how he's talking with Osbit