According to Muppet Wiki, "the alien planet Koozebane was a common stop for the Pigs in Space
crew and location of general alien weirdness on The Muppet Show. Several species that existed on this planet include the Male
Koozebanian Creature, the Female Koozebanian Creature, baby Koozebanian creatures, the Spooble, a morphing Phoob, the Merdlidops
and the Fazoobs. Jim Henson came up with the idea for the name of this planet from Coos Bay, Oregon."
Frank Oz (Male Koozebanian Creature, First Merdlidop)
Jerry Nelson (Female Koozebanian Creature, Second Merdlidop, The Koozebanian Phoob)
Richard Hunt (Third Merdlidop)
Dave Goelz (Fourth Merdlidop, The Koozebanian Spooble)