Mean Floyd is one of the villainous farmers from The Muppet Musicians of Bremen. Despite his name, Floyd is actually quite nervous and easily frightened. His biggest fear is to be confronted with ghosts, monsters, or swamp demons. Mean Floyd is Rover Joe's master, and he kicks out the old dog after mistaking him for a ghost.
As the old Henson.com "Featured Creature" page explains, these farmers were "part puppet and part costume. In long shots, the character's head was worn as a mask by a performer inside the costume. In close-ups, he was manipulated like a hand puppet." The illusion was so convincing that the Muppet Workshop received a phone call from a Hollywood makeup artist who was convinced that Henson had discovered a new form of makeup.