A loosely based remake of the 1965 western film The Sons of Katie Elder, Four Brothers is a 2005 movie about what happens when beloved citizen Evelyn Mercer is murdered in a store heist. Her four dangerous adoptive sons come to her funeral: Bobby Mercer (Mark Wahlberg), Angel Mercer (Tyrese Gibson), and Jack Mercer (Garrett Hedlund) join the regenerated ex-union leader, Jeremiah Mercer (André 3000). They decide to investigate the murder, discover that her execution was intentional, and resolve to find the criminals by themselves.
This film provides examples of:
Abusive Parents: At least two of the brothers, Bobby and Jack, are alluded to having these (either biological or foster) before Evelyn adopted them.
Aloof Big Brother: Bobby could be considered this prior to his mother's murder, although he becomes much more involved after returning to Detroit.
Annoying Younger Sibling: Jack is often treated like this, especially when he tries to act as the Only Sane Man by telling his brothers to stop doing something dangerous or stupid. Unfortunately, he's often promptly told to shut up.
Batman Gambit: The brothers pull one off at the end, exploiting Victor Sweet's Bad Boss tendencies to turn his men against him while playing on the paranoia of Dirty Cop Fowler to manipulate him into getting himself killed.
Berserk Button: Don't ever hurt a member of Bobby Mercer's family or talk bad about Evelyn around Jack. Period.
The Dog Bites Back: Victor Sweet's abused underlings probably would have turned on him for free, but the $400,000 Bobby bribes them with is enough for them to happily bury Sweet under a frozen lake once Bobby's done knocking the shit out of him.
Don't Tell Mama: Implied to have happened quite often, both in the past and present. Of course, it's also stated that Evelyn always found out what they did anyways.
In-Series Nickname: Bobby was known as the Michigan Mauler during his minor league ice hockey days.
Kick the Dog: Victor Sweet's usual way of punishment even going so far as forcing Evan and his wife to eat food off of the floor for "sitting in his seat". He also demands that one of his mooks let him have sex with his fiancee. Luckily, he never gets to.
Mama Bear: Evelyn in general, but especially evident when she goes to the police after finding out that Victor Sweet was trying to illegally shut down Jeremiah's development project.
Manly Tears : Many tears are shed, but especially Bobby.
Mook-Face Turn: Victor Sweet's men turn against him, thanks to the brothers paying them money Sweet has been withholding. Sweet forgot the Union history with his men - Union guys stand up for their own rights.
Morality Chain: Evelyn was this to the title characters. The film starts with her grisly murder, and then the boys find out that this wasn't a random mugging, but she was executed per orders of the Big Bad.
No-Holds-Barred Beatdown: During the shooting when Jack is shot and killed Bobby is so enraged that Angel has to pull him off of the guy in mid-gunfight.
N-Word Privileges: All of the characters do this, but Bobby is definitely the worse offender, especially since he's white and tends to drops N-bombs like candy whenever he's pissed off. This is likely a result of Bobby growing up with two black brothers and living in one of the roughest neighborhoods of Detroit.
Papa Wolf: Jeremiah slowly gets to this in the end.