Affleck was a guest on Jimmy Kimmel Live, where he showed a clip from of Bruce Wayne, played by himself, interacting with the Flash, played by Ezra Miller.
"Literally, the reason I took this movie is imagining wearing that costume and I've got a little boy and having my son see me", Affleck says.
The team included Muscle Man and Crayon Kid - plus there's an Oirish superhero in the mix in leprechaun hero Lucky Lad.
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Presales for Justice League Are Bigger Than That Of Wonder Woman
To know where " Justice League " is headed, it's often helpful to remember just how low " Justice League " has been. Wonder Woman began filming in 2015, the year before Justice League started filming in 2016.
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We feel this is the right thing to do for now to ensure we are able to provide our guests an exceptional service. That means any in-store advertisements for PowerPass have been removed and put in storage until further notice.
The Terrible Ten includes Affleck, Zach Galifianakis, Shaquille O'Neal, Will Arnett, Jon Hamm, Jason Bateman and Jennifer Aniston.
As the heroes come to the realization that their superpowers aren't so super (villainous sidekick Wanda Sykes is a box of bleach, for example), Damon gets in a dig in at Kimmel.
Kimmel is referring to Matt Damon's recent cameo in Thor: Ragnarok, where he played an Asgardian actor dressed as Loki.
Jimmy Kimmel seemed to be genuinely surprised by this freaky birthday treat.
"Interesting thing about [Justice League], this movie shifted schedule, some actor availability dropped [.] and Star Wars pushed, I don't know if you know this, but created some additional availability. We were created by a weird, sad kid, who grew to become a weird, fat man. F**k Kimmel!"
Alas, this wasn't a real movie trailer.