What The Hex Going On?
| Category | TV Episode |
| Genre | Animation, Comedy |
| Country | United States |
| Premiere | 1969-10-18 |
| Created By | Joseph Barbera, William Hanna |
| Director | Joseph Barbera, William Hanna |
| Story By | Ken Spears, Joe Ruby, Bill Lutz |
| Voice | Nicole Jaffe (as Velma), Casey Kasem (as Shaggy), Don Messick (as Scooby Doo), Frank Welker (as Fred), Stefanianna Christopherson (as Daphne), Hal Smith, John Stephenson, Jean Vander Pyl, John Stephenson |
| Links | https://www.imdb.com/title/tt0786221/ |