K-Trons are robot warriors of Erwin. They appear in Pac-Man World 3 in two variants: the yellow, normal K-Tron (which, depending on the level, can or cannot shoot lasers) and the red K-Tron, which has a bubble-shield that can be destroyed by a 3 Butt-Bounce combo. When a K-Tron is killed, it will explode into small pieces.