Scooby Doo! Mystery Incorporated is a vastly underrated series that took the franchise in a newer and darker direction. While the show only ran for two seasons, the series paid tribute to numerous projects in the franchise. From guest appearances by classic monsters to cameos from different friends and allies, here’s a list of all the times Scooby-Doo! Mystery Incorporated referenced other works in the Scooby-Doo universe.