Cannonbrawl is an excitable, bomb-themed monster of brute strength; he fires balls of energy that either teleport his victims to another place or destroy whatever he fires at with them. He was sent down to the Terra Venture to kidnap the High Councilor Renier and attempted to stop Leo Corbett and Damon Henderson's rescue mission after Damon had successfully repaired Trakeena's ship (which had been damaged in a meteor shower). Despite being destroyed, Cannonbrawl was briefly seen in the background, on Onyx, during the auction for the Pink Quasar Saber.