In "Invincible" #40, Rex's left hand is bitten off by Komodo Dragon of the Lizard League; the hand explodes inside Komodo's head, killing him. During this same fight, Dupli-Kate and Shrinking Ray are apparently killed. Thinking the fight is over, Rex lies down in sorrow and exhaustion, only to find that King Lizard is holding a gun to his head. He is shot through the head by King Lizard, but survives. After his recovery, he is given an artificial hand that can shoot his exploding projectiles.