Scooby-Doo and Guess Who? - Season 2 - Eps 24: A Haunt of a Thousand Voices!
Daphne takes the rest of the gang to meet her friend, famous voice over actor Frank Welker.
About Scooby-Doo and Guess Who?

Title: Scooby-Doo and Guess Who?
First Air Date: 2019-06-27
Last Air Date: 2021-10-01
Status: Canceled
Rating: 7.968/10 (from 231 votes)
Language: EN
Seasons: 2
Total Episodes: 52
Network: Boomerang HBO Max
Genres: Animation, Comedy, Mystery, Family
Production Companies: Warner Bros. Animation
Synopsis
The Mystery Inc. gang solve bigger mysteries while also encountering many memorable celebrities.
Cast

Frank Welker
Fred Jones / Scooby-Doo (voice)

Matthew Lillard
Shaggy Rogers (voice)

Grey DeLisle
Daphne Blake (voice)

Kate Micucci
Velma Dinkley (voice)