Since comic books were created in the 1940s fans have been debating over match ups between their favourite superheroes.
In the wake of the release of the Batman v Superman movie, and the forthcoming release of Captain America: Civil War (which is basically Captain America vs Ironman) next month, we ask why readers of comics love to see their favourite characters go head to head?
Bryan talks to cartoonist, writer and illustrator Adrian Kinnaird about these much-debated match-ups.