The 10 most failed superhero movies ever, ranked

If there's a solid bet for big-budget Hollywood movies these days, it's the superhero genre.

One of the biggest movies of this summer was (for yet another year) a Marvel mashup, "Captain America: Civil War." Meanwhile, Warner Bros.' DC Comics title "Suicide Squad" struggled, breaking a record in its first weekend and then quickly dropping based on bad reviews and worth of mouth.

But "Squad" can't even come close to the most epically disastrous superhero movies. Long before they were Hollywood's cash cow, comic-book adaptions were known as a notoriously mixed bag. For every Tim Burton "Batman" there was... "Blankman."

Here are the wide-release superhero movie titles with the lowest box-office grosses, going back to 1978, as reported by Box Office Mojo: