Matthew Lillard and Frank Welker in Big Top Scooby-Doo! (2012)

Grey Griffin in Big Top Scooby-Doo! (2012)

Matthew Lillard, Mindy Cohn, Grey Griffin, and Frank Welker in Big Top Scooby-Doo! (2012)

Mindy Cohn, Grey Griffin, and Frank Welker in Big Top Scooby-Doo! (2012)

Matthew Lillard, Mindy Cohn, and Grey Griffin in Big Top Scooby-Doo! (2012)

Mindy Cohn, Grey Griffin, Greg Ellis, and Frank Welker in Big Top Scooby-Doo! (2012)

Mindy Cohn and Grey Griffin in Big Top Scooby-Doo! (2012)

Matthew Lillard, Grey Griffin, and Frank Welker in Big Top Scooby-Doo! (2012)