Invisighoul

Invisighouls are invisible ghost enemies that appear in exclusively during Hector the Reflector's boss battle at the end of Hector the Reflector's Haunted House in Yoshi's Island DS. Invisighouls resemble Hector the Reflector, although they are smaller in size and possess arms, somewhat similar to Boos. Invisighouls are only visible in the mirror on the lower screen during the boss battle, and carry chairs, tables or flowerpots towards Yoshi which will cause damage upon contact, but can also be swallowed along with the Invisighouls to create Yoshi's Eggs.