BOY-O (Lo Faber) -- the Last Great Rock Star, Boy-O is a schizoid phantasm who exists only in Freddie's mind; in fact Freddie spends a substantial part of his life in the persona of Boy-O, performing shows at the Underland Rock'nRoll Cabaret.
THE FRIDAY NIGHT FREAKS -- in reality fellow denizens of the psychiatric ward, in Freddie's deluded mind they become the lowlife patrons of the Underland Cabaret, including the following principal figures....
MERCURY Z (David Girard) -- the host and Master Of Ceremonies at the Underland Rock'n'Roll Cabaret.
KITTEN CANDI (Angela Ford) -- the house singer at the Underland Rock'n'Roll Cabaret, Kitten is addicted to antidepressants and uses meaningless sex to dull the ache of everyday existence.
BARTENDER BECKY (Zabeth Chase) -- not only the bartender at the Underland Rock'n'Roll Cabaret, Becky is also a faithful and devoted groupie of Boy-O.
DR. ÜNTERLAND (Todd Pasternack) -- the leading clinical psychiatrist at the Ünterland Home For The Totally Insane. Happens to be completely insane as well.
STROGENA (Lo) -- an alien being from the Planet Zlotar-17, who happens to be an accomplished inventor. Voice always appears in the left channel.
RILDIVAM (Lo) -- another alien from Zlotar-17, Rildivam is a profound philosopher. A lower voice than Strogena, always appearing in the right channel.
THE KING OF THE DEAD -- rules over the dominions of Hell, Hades, and the Shadow Worlds. Hates the title King, preferring to be called C.E.O. of the Dead. Has lots of time on his hands now that he has contracted the administration of Hell out to Halliburton Brown & Root. Played by Dr. Ünterland in the bizarre psychodrama of Disc 2.
THE QUEEN OF THE DEAD -- played by Kitten Candi in the Disc 2 psychodrama; a beautiful though wordless prisoner of the King.
MERCURY, MESSENGER OF THE GODS -- played by Mercury Z in the strange drama of the Underworld.
GIRL -- Boy-O's deceased bride, played by Becky the Bartender.
THE SHADIES -- hapless inmates of the Shadow World, they spend eternity pushing large boulders up hills, reaching in vain for succulent fruits that always elude their grasp, and listening to Clear Channel-owned FM radio stations.
