Exeller is sadistic and cruel. He punishes his servants if they fail to follow his orders, however nowhere near as badly as Sark does. Despite who he is, he claims that he's not like the other EXE's. He even restarted the timeline to give his victims another chance to survive. While Exetior, Highests do not have a natural shape. They are semi-transparent core energy of a certain color (Pink-red for Exetior) flying in the air, and slightly distorting the perception of light inside themselves.