Batman suffered another horrific defeat at the hands of the Mutant Leader in Frank Miller's "The Dark Knight Returns." The popular story revolves around an aged Bruce Wayne who comes out of retirement to fight for the citizens of Gotham City once more.

Batman is one of the world's greatest fighters, but there are actually two people in Gotham who can beat him in a one-on-one.

Arkham games are full of enjoyable boss fights, but today, we're looking at the top 10 worst ones that left everyone disappointed.