When the sour-sweet wind starts blowing again, the Whos retreat to their homes because they know the Grinch will soon be a'prowlin. Young Eukariah Who has to make a trip to the Euphemism (outhouse), when the wind blows him away to a confrontation with the gruesome Grinch. Eukariah decides that the Grinch must be stopped, so he faces his fears and confronts the Grinch and his spooks.
Unfortunately the movie Halloween Is Grinch Night is not yet available on HBO Max.
| Writing | Dr. Seuss | Teleplay |
| Crew | Roy Morita | Title Graphics |
| Crew | Bob Dranko | Title Graphics |
| Visual Effects | Lee Mishkin | Animation |
| Visual Effects | Don Williams | Animation |
| Visual Effects | Rudy Zamora Jr. | Animation |
| Visual Effects | Chrystal Russell | Animation |
| Visual Effects | Willis Pyle | Animation |
| Visual Effects | John Gibbs | Animation |
| Visual Effects | Fred Hellmich | Animation |
| Visual Effects | Bob Matz | Animation |
| Editing | Robert Gillis | Editor |
| Editing | Joe Siracusa | Editor |
| Editing | Rick Steward | Editor |
| Art | Richard H. Thomas | Background Designer |
| Directing | Gerard Baldwin | Director |
| Production | Lee Gunther | Production Manager |
| Camera | Ray Lee | Camera Operator |
| Camera | Ralph Migliori | Camera Operator |
| Camera | Bob Mills | Camera Operator |
| Sound | Joe Raposo | Music |
| Production | Dr. Seuss | Producer |
| Production | David H. DePatie | Executive Producer |
| Production | Friz Freleng | Executive Producer |
| Sound | Thurl Ravenscroft | Vocals |
| Sound | Eric Rogers | Conductor |
| Writing | Dr. Seuss | Lyricist |
| Directing | Barrington Bunce | Assistant Director |
| Writing | Dr. Seuss | Characters |
