Ben Affleck stopped by "Jimmy Kimmel Live!" Wednesday evening to debut a new "Batman v Superman" trailer, and it shows off a lot of new footage.

While we know the two superheroes will go head-to-head in next spring's movie, the biggest reveal was of a new villain the two will face off against: Doomsday.

doomsday batman v supermanWarner Bros.

doomsdayWarner Bros.

While Batman and Superman may start off as likely foes, it looks like they'll have to put their beef aside in order to deal with, what appears to be, a resurrected General Zod (Michael Shannon) (Yep! We're going there!) in the form of a monstrous creature known as Doomsday in the comics. 

Oh yeah, and they'll get a little bit of help from Wonder Woman (Gal Gadot) who makes an appearance alongside the duo at the trailer's end. Pretty awesome.

wonder woman batman v superman Not sure how I'm feeling about Batfleck with that gun, though. Warner Bros.

"Batman v Superman" will be in theaters March 25, 2016. 

Check it out below.