Psychic Slug

…a slithering slimy like sound could be heard as something squerched and slurped its way towards us. Suddenly each of us was struck by a pounding headache, and a cylindrical leech-like thing the size of a $%^&ing horse (!!!) squilched its way into view. … it had writhing tentacles for a face…

The henchmen immediately start bleeding from their noses as the leech thing started fiddling with their brains magically. Mern… felt suddenly compelled to charge up and strike the leech… Meanwhile, a henchman starts pooping on the floor…

…Columbo's henchmen then proceeds to attack Columbo… Columbo also starts pooping on the floor at this time.
— Enter the Eibon Fortress