Fred Jones / Scooby-Doo (voice)

Shaggy Rogers (voice)

Daphne Blake (voice)

Velma Dinkley (voice)

Joker (voice)

Mr. Peebles (voice)

Madds Markson (voice)

Talent Agent / Crazy Karl / Baz Bozzington (voice)

Wanda Sykes (voice)

Sherlock Holmes (voice)

Ricky Gervais (voice)

Wonder Woman (voice)

Penn Jillette (voice)

Teller (voice)

Steve Urkel / Urkel-Bot (voice)

Jim Gaffigan (voice)

'Weird Al' Yankovic (voice)

Sia (voice)

Kenan Thompson (voice)

Batman (voice)

Alfred Pennyworth (voice)