Mightiest among the DINOBOTS, GRIMLOCK masked a surprising intelligence behind simplistic speech patterns. His contempt for the weak kept him often at odds with OPTIMUS PRIME, but his hatred for all those who exploited their strength at the expense of others kept him always firmly on the side of right. Though he could bring a huge array of weapons to any fight, he preferred to close with his enemies, wielding his Energo sword in robot mode, or simply crushing his enemies’ limbs with his powerful jaw as a tyrannosaurus.