Who Played Who in 'Four Brothers'? the Complete Cast, Character, and Reunion Guide

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The entire emotional foundation of the Detroit crime drama rests on the belief that four radically different young men could share a fierce, unified loyalty under the same roof. Singleton cast performers whose real-world personas mirrored their characters' behavioral defense mechanisms.

Mark Wahlberg as Bobby Mercer: The eldest, most reckless brother operates as the raw muscle of the unit. Wahlberg brought the coiled, blue-collar aggression he perfected in The Departed and Boogie Nights to Bobby, a hockey-enforcer ex-con who communicates through direct violence. Bobby is the architect of the retaliatory campaign, unable to process grief through anything other than ballistic retaliation.

Tyrese Gibson as Angel Mercer: Fresh off Baby Boy and 2 Fast 2 Furious, Gibson played Angel, a swaggering former military man with a history of petty crime and casual womanizing. Angel serves as the tactical field soldier. Gibson balances humor with sudden physical capability, operating as Bobby’s primary combat wingman throughout the neighborhood confrontations.

André Benjamin as Jeremiah Mercer: Better known as André 3000 of OutKast, Benjamin gave the group its intellectual center. Jeremiah is the only brother who stayed in Detroit, married, built a legitimate small business, and attempted to raise a family. Benjamin plays Jeremiah with reserved stillness, highlighting the painful contrast between a man seeking civic respectability and the chaotic street code of his returning brothers.

Garrett Hedlund as Jack Mercer: The youngest, adopted last by the Mercer family, Jack is a struggling rock musician perpetually trying to prove he is just as tough as his elder siblings. Hedlund, who had just stepped onto Hollywood’s radar in 2004’s Troy and Friday Night Lights, infused Jack with vulnerability. His desperate need for validation from Bobby and Angel makes his character arc the emotional flashpoint of the third act.