 | Jerry Nelson als Herry Monster (voice) / Frazzle (voice) / Maurice Monster (voice) / Two-Headed Monster (left half) (voice) / Announcer (voice) |
 | Kevin Clash als Elmo (voice) |
 | Frank Oz als Cookie Monster (voice) / Grover (voice) / Clancy (voice) |
 | Cheryl Blaylock |
 | Ed Christie |
 | Jim Henson als Harvey Monster (voice) |
 | Richard Hunt als 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 als Herry's Father (voice) |
 | David Rudman als Herry's Granny (voice) / Herry's Mother (voice) |
 | Caroll Spinney als Oscar the Grouch (voice) |
| Jon Stone | Director |
| Chris Cerf | Writer |
| Nina Elias Bamberger | Producer |
