Leader of the Aqueons aboard the water transportation vessel, Grimalkin kept the pacifist belief in high regard, even offering no resistance when Mutilor and his thugs overtook the Aqueon vessel. After being freed by the SWAT Kats, Grimalkin briefly gave up his beliefs, rushing up and disarming one of Mutilor’s henchmen who was reaching for a weapon. With their vessel freed, Grimalkin and his crew left the planet and returned back into space.