Robert Downey Sr. Director Martin Mull Archie Powell Actor Dick Shawn Charlie Slater Actor Jennifer Tilly Mona Lisa Actor Robert Downey Jr. Wolf Dangler Actor Mel Welles Milo Actor Shelley Berman Bill Slotnik Actor Edy Williams Heather Darling Actor June Lockhart Archie's Mother Actor Kenneth Mars Reverend Farrell Actor Eileen Brennan Hotel Desk Clerk Actor Pat McCormick Winky Actor Michael Horse Bobby Leaping Mouse Actor