Scooby-Doo and Guess Who?

Frank Welker

Fred Jones / Scooby-Doo (voice)

Matthew Lillard

Shaggy Rogers (voice)

Grey DeLisle

Daphne Blake (voice)

Kate Micucci

Velma Dinkley (voice)

Wanda Sykes

Wanda Sykes (voice)

Ian James Corlett

Sherlock Holmes (voice)

Ricky Gervais

Ricky Gervais (voice)

Rachel Kimsey

Wonder Woman (voice)

Penn Jillette

Penn Jillette (voice)

Teller

Teller (voice)

Jaleel White

Steve Urkel / Urkel-Bot (voice)

Jim Gaffigan

Jim Gaffigan (voice)

'Weird Al' Yankovic

'Weird Al' Yankovic (voice)

Sia

Sia (voice)

Kenan Thompson

Kenan Thompson (voice)

Kevin Conroy

Batman (voice)

Steven Weber

Alfred Pennyworth (voice)

Mark Hamill

Joker (voice)