Cliff's Nightmare

Bill Cosby

Heathcliff Huxtable

Phylicia Rashād

Clair Huxtable

Malcolm-Jamal Warner

Theo Huxtable

Tempestt Bledsoe

Vanessa Huxtable

Lisa Bonet

Denise Huxtable

Keshia Knight Pulliam

Rudy Huxtable

Sabrina Le Beauf

Sondra Huxtable

Geoffrey Owens

Elvin Tibideaux

Raven-Symoné

Olivia Kendall

Joseph C. Phillips

Martin Kendall

Wallace Shawn

Jeffrey Engels

Steve Whitmire

Scallions (voice)

Carmen Finestra

Andy Witherspoon III

Dave Goelz

The Great Gonzo / Digit (voice)

Noel MacNeal

Cheese (voice)

Matt Robinson

French scientist

Fran Brill

Pink Frackle / Patina / Tomato (voice)

Richard Hunt

Statler / Blue Frackle / Sandwich (voice)

Jim Martin

Doglion / Cauliflower (voice)

David Rudman

Sweetums / Boo Monster (voice)

John Markus

Ehrich Van Lowe