Big Top Scooby-Doo! (2012)

Franklin Wendell Welker (born March 12, 1946) is an American voice actor with an extensive career spanning nearly six decades. As of 2021, Welker holds over 860 film, television, and video game credits, making him one of the most prolific voice actors of all time. With a total worldwide box-office gross of $17.4 billion, he is also the third highest-grossing film voice actor of all time.

Mindy Cohn (born May 20, 1966) is an American television, film and voice actress, who appeared on VH1's List of "100 Greatest Kid Stars". She starred as Natalie Green in the sitcom The Facts of Life from 1979 to 1988, and is known for voicing Velma Dinkley in the Scooby-Doo franchise from 2002 to 2015.

Grey DeLisle (born August 24, 1973), sometimes credited as Grey Griffin, is an American voice actress, comedian and singer-songwriter. DeLisle is known for various roles in animated productions and video games. On September 27, 2018, she released her debut comedy act, titled "My First Comedy Special".