Jerry Nelson

Herry Monster (voice) / Frazzle (voice) / Maurice Monster (voice) / Two-Headed Monster (left half) (voice) / Announcer (voice)

Kevin Clash

Elmo (voice)

Frank Oz

Cookie Monster (voice) / Grover (voice) / Clancy (voice)

Cheryl Blaylock

Ed Christie

Jim Henson

Harvey Monster (voice)

Richard Hunt

Stuie Monster (voice) / Lavender Frazzletone (voice) / Two-Headed Monster (right half) (voice) / Furline Huskie (voice) / Kermit the Frog (voice)

Rick Lyon

Jim Martin

Brian Muehl

Martin P. Robinson

Herry's Father (voice)

David Rudman

Herry's Granny (voice) / Herry's Mother (voice)