Question: What character did Casey Kasem portray in What's New, Scooby-Doo?
Sentence (from "What's New, Scooby-Doo?"): It is the first television series in the franchise in which Frank Welker, Grey DeLisle and Mindy Cohn respectively portrayed the voices of Scooby-Doo, Daphne and Velma; and the final one in which Casey Kasem portrayed Shaggy, having originally quit the role following a dispute regarding the portrayal of the character.
Relevant evidence: Yes