Patroller looks very similar to the Mushroom Monster, being a robot shaped like a mushroom with legs. It has a siren on its head.
Behaviour
Patroller pops out of the ground and starts patrolling around, while emitting a light. If the player gets caught in this light, the enemy will stop in its tracks and count down from 5. The countdown can be stopped by either killing or stunning the enemy. If this countdown reaches 0, the Patroller sounds an alert and will activate any Toppin Monsters in the room and open any Alert Gates. This countdown can be skipped by taunting, which can be used to save time when activating an alert is required. If the player stuns this enemy without killing it, the countdown will start the moment it gets out of its stunned state, even if Peppino was never in its line of sight.
Flying Patroller is a robotic set of false teeth, similar to a chatterbox toy, with a propeller attached to it. In its alert animation, it reveals 2 eyes and an arm from inside it.
Behaviour
Flying Patroller behaves exactly like the standard Patroller; however, instead of patrolling around it simply hovers in place.