Actor Jonathan Majors has been found guilty of assaulting his then-girlfriend after a trial in New York.
The jury found Majors, known for playing Kang in the Marvel universe, attacked British choreographer Grace Jabbari during an altercation in March.
She told the court she was left with a fractured finger, bruising, a cut behind her ear and “excruciating” pain.
Majors now faces up to a year in jail, with a question mark over his starring roles in forthcoming Marvel films.
The six-person jury’s verdict was announced on Monday following three days of deliberations.
The crime took place when the couple were in a car in New York and Ms Jabbari saw a text message from another woman on Majors’ phone, which said: “Wish I was kissing you right now.”
According to prosecutors, when she took the phone, he then grabbed her, twisted her arm behind her back and hit her in the head to get it back.
“I felt like a hard blow across my head,” Ms Jabbari testified.
The jury found him guilty of two of the four domestic violence charges that he was facing.
He was found guilty of assault by recklessly causing physical injury, as well as harassment.
But the jury declined to convict him on charges of aggravated harassment and assault with intent to cause physical harm.
The prosecution painted the assault as the latest escalation in Majors’ attempts to “exert control” over his girlfriend through physical and emotional violence. They shared voice recordings and text messages between the former couple with the jury.
“I’m a monster. A horrible man. Not capable of love,” the actor sent in September 2022 while threatening to kill himself.
In audio from an argument that same month, Majors told her she needed to act more like Coretta Scott King and Michelle Obama, the wives of Martin Luther King and former President Barack Obama.
“I am doing great things, not just for me but for my culture and the world,” he said, adding that she would need to “make sacrifices” for him.
Majors, 34, did not testify. His lawyer has claimed the actor was the victim, however, and that Ms Jabbari assaulted him in a jealous rage after seeing the text message in the car.
Majors, who also starred in Creed III, counter-sued her in June, alleging that she was the actual aggressor but prosecutors declined to charge her due to a lack of evidence.
As the verdict was read in court, Majors pursed his lips and looked downwards, according to Reuters.
Neither he nor his lawyers have issued any statement in response to his conviction.
A sentencing hearing will be held in February. The judge also issued a new protection order, requiring him to have no contact with Ms Jabbari.
Ms Jabbari had met Majors two years earlier on the set of Ant-Man and the Wasp: Quantumania, where she was a movement coach.
After his arrest, Marvel pushed back the release of Avengers: The Kang Dynasty, in which Mr Majors is due to play the lead villain.
Another film, Magazine Dreams, which had been touted as a possible Oscar contender, also had its release postponed following the allegations.