Scooby-Doo has been one of the most treasured Saturday morning cartoon heroes since his 1969 debut. His interactions with the heroes of DC Comics date back to the 1970s, when he shared two episodes of The New Scooby-Doo Movies with Batman, Robin, Penguin, and Joker. Since Scooby and the gang landed their own comic book under DC, those interactions have become considerably more frequent.
Source：https://www.cbr.com/best-dc-comics-scooby-doo-team-up-crossovers/
