Choker Oh (チョーカーオー Chōkāō?) is an enemy robot in Mega Man 6 that appears in Centaur Man's stage--specifically, in the strange area where the water is in the upper half of the screen. They attack by opening the lid on their heads to shoot at Mega Man. They are equipped with a heat sensor that allows them to detect the thermal energy from enemy attacks and counterattack by hopping toward the enemy.