- Caroll Spinney: Oscar
- David Rudman: Gary Grouch
- Marty Robinson: Tan Grouch
- Kevin Clash: Comb-Blowing Grouch
- Jim Martin: Green (pipe-blowing) Grouch
- Oscar's Junk Band also appears in the 1994 book Oscar's Grouch Jamboree, playing for the grand finale of the Grouch Jamboree. In the book Oswaldo bangs on a tin can with a broom handle, Grundgetta blows through a comb covered with wax paper, Oscar blows across the mouth of a soda bottle, Travis rattles bits of dried-up orange peel in a can & Filthomena clatters ice cube trays.