Batman and Superman

Pittsburgh Steelers fan Joe Manganiello, the actor cast to play DC assassin Deathstroke in DC Films upcoming “The Batman,” seized a key opportunity to taunt the actors who play Batman and Superman.

What prompted him? The fact that the Steelers advanced Sunday night to the AFC championship after defeating the Kansas City Chiefs — cheered on by Supes himself, Henry Cavill.

Superman down… Batman's next#HereWeGo @Steelers #MenOfSteel #AFCChampionship
See you Sunday,
#DEATHSTROKE pic.twitter.com/Qb7vmZeC0Z

— Joe Manganiello (@JoeManganiello) January 16, 2017

Cavill has been a longtime supporter of the Kansas City Chiefs, and was seen on the sidelines of the team’s playoff game against the Steelers on Sunday night.

Alas, it wasn’t the Chiefs’ night.

Next weekend the Steelers will face off against the New England Patriots — and we all know who cheers them on: Boston native Ben Affleck a.k.a. Batman.

Also Read: Joe Manganiello Reveals When Ben Affleck's 'The Batman' Will Begin Production

Manganiello also just celebrated his 40th birthday with wife Sofia Vergara at a Hollywood bash at the W Hotel.

He was cast as Deathstroke last summer — a character that is supposed to make an appearance in Zack Snyder’s “Justice League,” the director teased on social media last year.

Both Batman and Superman will also be seen in”Justice League,” which is currently in post-production and is slated for release this November.

Also Read: Deathstroke Will Be Main Villain in Ben Affleck's Batman Movie (Exclusive)

If the Steelers win, beat Batman’s team, and advance to the Superbowl, then who will Deathstroke troll next? Last time we checked Darkseid wasn’t really a football fan.

DC Films 'Justice League': What We Know So Far (Photos)

"Justice League" is exactly a year away as the film will be released in theaters on Nov. 17, 2017. Here's what we know so far.
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Ben Affleck will return as Batman and have an upgraded Tactical Batsuit along with enhancements to the Batmobile.
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Gal Gadot will return as Wonder Woman and work with Batman to recruit other metahumans to fight off an intergalactic threat.
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Henry Cavill will return as Superman after he “died” in the climactic battle of "Batman v Superman: Dawn of Justice." Exactly how, remains unknown.
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Ezra Miller will star as Barry Allen a.k.a. "The Flash" and feature a costume created by Bruce Wayne's Wayne Tech.
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Jason Momoa will star as Aquaman and play the metahuman most reluctant to join the "Justice League." We will also get a first look at Atlantis.
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Ray Fisher will star as Cyborg whose suit will be made from alien technology. Cyborg has two modes: Battle Mode and also a civilian mode.
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Amber Heard will star as Mera, Queen of Atlantis and will reprise her role in the "Aquaman" standalone film.
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J.K. Simmons will play Gotham City's Commissioner Gordon and alert the "Justice League" about the Alien threat which is kidnapping scientists around Earth.
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Darkseid's presence will loom large in "Justice League" as the film's prologue introduces the New God while ancient Amazonians, Atlanteans, and pre-historic humans fight him off Earth.
DC Comics
New God Steppenwolf will be the main villain in "Justice League" and be portrayed by "Game of Thrones" Ciaran Hinds as TheWrap exclusively reported.
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A member of the Green Lantern Corps. will be seen in "Justice League" in a key sequence.
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There are three motherboxes on Earth in the care of the Amazonians, mankind, and the Atlanteans. Steppenwolf comes to Earth to retrieve them.
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Assassin Deathstroke will make a small cameo in "Justice League." Joe Maganiello will play the character before reprising the role in "The Batman."
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If you enjoyed this gallery, check out 14 Biggest Superhero Movies Opening in 2017, From ‘Power Rangers’ to ‘Wonder Woman’ (Photos)