In the original series Eye Guy only appeared once, it didn't feel right that he appeared numerous times in Ben 10: Omniverse, sometimes not even doing very well in combat, e.g. when fighting Albedo. He may be a good alien but there are better aliens that can do things like laser blasts e.g. Chromastone, freeze things e.g. Big Chill, Arcticgana ,and make fire e.g. Swampfire, Heatblast. There isn't really anything unique about Eye Guy and he shouldn't be appearing as much as he does in Ben 10: Omniverse.