LED Accents Make Grimlock More Menacing in Battle
Grimlock’s eyes, in both robot and T.rex mode, are illuminated with LEDs and glow blue when the Dinobot is being friendly, or switch to a menacing red tint when the Autobot is angry or ready for battle. In T.rex mode, there’s also an additional LED inside Grimlock’s mouth which illuminates to simulate him breathing fire.
