9. Animal Man & Swamp-Thing

AM&ST

Many of you won’t have heard of either of these superheroes, but both have risen to prominence thanks to DC’s “The New 52” relaunch. For the first 18 months or so of their respective runs, writers Scott Snyder and Jeff Lemire kept both series’ connected in a bizarre and frightening tale called “Rotworld”. The machinations of an evil being called Anton Arcane lead to these two heroes being plunged into an apocalyptic future where all of DC’s superheroes had fallen to the Rot, becoming twisted and monstrous versions of themselves. While both characters could first be introduced in Guillermo del Toro’s planned Justice League Dark, this would definitely work as a team-up movie as it would be crammed with cameos from lesser known DC heroes and the likes of Superman and The Flash.