Things in the Game: Bugeye
Bug-eyes are not very bright, but can easily get in your way if you're not careful!
They follow the wall to their left. If you put something in their path, they will go around it, but still to their left.
Bug-eyes will pick up keys along the way, and the only way you can get those back is to kill them. However, if they fall into a pit, water, or lava while they have a key, that key will be lost forever! Actually, make sure the bug-eye is over plain floor before killing it!
They will zap Rich if he gets directly in their way. Note that bug-eyes can zap Rich either at the start or at the end of their movement.