Antimatter is shown to be somewhat snooty, and can also get cocky sometimes. Antimatter is also the second most-powerful character (behind Oodle) and the most powerful contestant. They say they can "essentially do anything" and how they "exist everywhere known in the universe". They also have the ability to shrink themselves into the size of an atom. They're also shown to have a silly and somewhat quirky nature, as they like to smell people for an unknown reason