Brainfreeze is a monster added in Revelations Chapter One.
Brainfreeze is a monster that can be found in the Glacier floorpath. He slowly follows the player, periodically creating a freeze aura that slows the player and his shots. When the aura ends, Brainfreeze will shoot all frozen tears at the player. Brainfreeze's aura can freeze enemy shots as well. He also does contact damage.