Cast List

The following actors are featured in Happy Halloween, Scooby-Doo!

Frank Welker Also starred in: Scooby-Doo and Guess Who? , Curious George , Transformers: Prime

Matthew Lillard Also starred in: Scooby-Doo and Guess Who? , Scream , She's All That

Grey Griffin Also starred in: Scooby-Doo and Guess Who? , Scooby-Doo And The Cyber Chase , Dan Vs.

Kate Micucci Also starred in: Scooby-Doo and Guess Who? , Scooby-Doo! & Batman: The Brave and the Bold , Little Big Awesome

Cassandra Peterson Also starred in: Elvira's Movie Macabre: The Brain That Wouldn't Die , Elvira's Movie Macabre: Scared To Death , Elvira's Movie Macabre: Teenagers From Outer Space

Bill Nye Also starred in: Bliss , Fight For Space , The Mars Generation

More movies and TV shows at the Australian TV Listings Guide..