Chris Evans and Chris Pratt have made an epic superhero Super Bowl bet, with Evans cheering for the New England Patriots and Pratt for the Seattle Seahawks.

Chris Evans vs. Chris Pratt Super Bowl Bet

The Marvel family feud – Evans has starred as Captain America in three films and Pratt made his Marvel debut in the summer hit Guardians of the Galaxy – began on Monday after the Seahawks made their way into the Super Bowl. Evans sent Pratt a challenging tweet, saying, “Looks like our teams are going into battle. For the next 2 weeks, you are not my friend, you are my enemy.”

Well, well, well @prattprattpratt, looks like our teams are going into battle. For the next 2 weeks, you are not my friend, you are my enemy

— Chris Evans (@ChrisEvans) January 19, 2015

Pratt responded with a dig at Evans’ Marvel alter ego, inspiring Evans to ask for a good old-fashioned bet.

@ChrisEvans We both know there’s only one Captain America and his name is Russell Wilson. #SuperBowlBound #LOB #Repeat

— chris pratt (@prattprattpratt) January 19, 2015

@prattprattpratt them’s fightin words. Stakes? #whatisaseahawkanyway #somethingtombradyhunts

— Chris Evans (@ChrisEvans) January 19, 2015

Pratt and Evans settled on charitable terms, with Evans promising to visit a Seattle Children’s Hospital in Captain America uniform if the Seahawks win, and Pratt pledging to visit Boston’s Christopher’s Haven, a home for families with children fighting cancer, in full Star Lord costume should the Patriots claim victory.

@ChrisEvans OK. Seahawks win you fly yourself to Seattle, visit @seattlechildren hospital as Captain America, waving the 12th man flag.

— chris pratt (@prattprattpratt) January 21, 2015

@prattprattpratt I accept. And when the Patriots humiliate your seachickens, I expect Star-Lord to arrive at @chris_haven in a Brady jersey

— Chris Evans (@ChrisEvans) January 21, 2015

Pratt continued to trash talk, alluding to the recent Patriots deflategate scandal, telling Evans he should “talk to Brady about deflating your expectations.”

@ChrisEvans Humiliate my Seahawks? Maybe talk to Brady about deflating your expectations. BOOM! (legion of) You’re on sucka.

The NFL Super Bowl XLIX will air Sunday, Feb. 1, at 6:30 p.m. on NBC.