You've no doubt heard of the Blue Falcon and Dynomutt from 2020's "Scoob!," but this heroic pair has actually been around since the early '70s and crossed over with Scooby and the gang way back in "The Scooby-Doo/Dynomutt Hour." Since then, these Hanna-Barbera icons have made their mark on both "Scooby-Doo" and other Warner Brothers-related properties. A darker, Frank Miller's Batman-inspired version of the Blue Falcon appeared on "Scooby-Doo! Mystery Incorporated," seeking revenge against a robot dragon, though Dynomutt retains his upbeat personality. The duo would return again in the animated film "Scooby-Doo! Mask of the Blue Falcon," which was more of a meta deconstruction obviously inspired by Adam West's 1960s "Batman" series and Christopher Nolan's Dark Knight Trilogy.

Although Blue Falcon is a clear Batman ripoff, Dynomutt serves a more comedic, Scooby-like role that has always balanced the two out, no matter how dark his pal B.F. gets. More recently, Blue Falcon and Dynomutt arrived to help Scooby and the gang on the case of the Medusa Monster in "Scooby-Doo and Guess Who?," which gets all sorts of weird. Still, if Shaggy, Scooby, and the gang ever need a hero to call, you can bet that Blue Falcon and Dynomutt are at the top of their list.