Brennan Huff and Dale Doback might be grown men. But that doesn't stop them from living at home and turning into jealous, competitive stepbrothers when their single parents marry. Brennan's constant competition with Dale strains his mom's marriage to Dale's dad, leaving everyone to wonder whether they'll ever see eye to eye.
Full Cast of Step Brothers
Will Ferrell
A graduate of the University of Southern California, Will Ferrell became interested in performing while a student at ...
John C. Reilly
John Christopher Reilly (born May 24, 1965), better known as John C. Reilly is an American film and theatre actor. De...
Mary Steenburgen
Mary Nell Steenburgen (born February 8, 1953) is an American actress. She was most successful for playing the role of...
Adam Scott
Adam Scott (born April 3, 1973) is an American actor, producer, screenwriter, director and podcaster. He is best know...
Kathryn Hahn
Kathryn Marie Hahn (born July 23, 1973) is an American actress and comedian. She began her career on television, star...
Andrea Savage
Andrea Kristen Savage (born February 20, 1973) is an American actress, comedian, and writer known for her roles in pr...
Lurie Poston
Elizabeth Yozamp
Logan Manus
Lili Rose McKay
Seth Morris
Seth Morris is an actor and writer.
Wayne Federman
Wayne Federman was born on June 22, 1959 and is currently 65 years old.
Maria Quiban
Gillian Vigman
Gillian Vigman was born on January 28, 1972 in New Jersey, USA. She is an actress and writer, known for Step Brothers...
Brian Huskey
From Wikipedia, the free encyclopedia Brian Huskey (born September 8, 1968) is an American character actor, comedian...
Adam McKay
Adam McKay (born April 17, 1968) is an American film and television director, producer, screenwriter, and comedian. M...
Seth Rogen
Seth Aaron Rogen (born April 15, 1982) is a Canadian-American actor, comedian, and filmmaker. Originally a stand-up c...
Mary Catherine Hamelin
Ian Roberts
Ian Roberts was born on July 29, 1965 and is currently 59 years old.
Phil LaMarr
Phillip "Phil" LaMarr (born January 24, 1967) is an American actor, comedian and voice actor. One of the original cas...
Rob Riggle
Rob Riggle, comedian, actor and United States Marine Corps Reserve Lieutenant Colonel, was born April 21, 1970 in Lou...
Jason Davis
Jason Alexander Davis is an actor and producer.
Paula Killen
Ken Jeong
A real-life physician-turned-actor, Ken Jeong lit up the Hollywood radar with scene-stealing performances in high-gro...
Horatio Sanz
From Wikipedia, the free encyclopedia Horatio Sanz (born June 4, 1969) is a Chilean-born American actor and comedia...
Kyle Felts
Matt Walsh
Matthew Paul "Matt" Walsh (born October 13, 1964) is an American actor, comedian, director, and writer best known as ...
Dmitri Schuyler-Linch
Dmitri began acting at the age of four, performing primarily in commercials. The one exception was a small role in th...
Crew of Step Brothers
Discover the backstage crew of Step Brothers →- Released on July 25, 2008