'M*A*S*H' Star Mike Farrell Opens Up About His Doubts Replacing Wayne Rogers

It's not uncommon for popular series to sometimes write off popular characters as the actors leave. When Wayne Rogers left M*A*S*H, actor Mike Farrellwas excited to join as a new character, but he had his doubts about replacing the original cast member.

During an appearance on the Still Here Hollywood podcast, Farrell revealed that he had his initial doubts when he was cast in the hit '70s series as Captain B. J. Hunnicutt for Season 4. At the time, his character was written into M*A*S*H after Rogers' abrupt departure as the well-loved Captain Trapper John McIntyre.

Farell admitted that when he first learned about landing the role, he "screamed aloud" and "ran down" to his car. The news felt like a dream come true for the actor, and he spoke with Alan Aldaabout "his hopes for it, and his dreams, and his intentions, and about the hopes for this character, and what it could be, what it could mean after Trapper left."

Amid the joy, Farrell was inherently worried, knowing he was ultimately replacing Rogers in a central role. He knew the M*A*S*H ensemble cast had gotten close over the course of three seasons, and he was coming in as a newbie.

"M*A*S*H is thought of as being a kind of family, a group that really cares about each other, and they're very connected," Farrell explained. "And I thought, ‘Oh, am I going to be the stepchild who forced out one of their brethren?'"

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To his surprise, Farrell walked onto set and was welcomed with open arms. The first person to shake his hand and say "Welcome, Mike. Happy to have you here," was Gary Burghoff. Farrell would end up becoming a M*A*S*H fan favorite and played the role for eight years.

According to Remind Magazine, Rogers left feeling like his character, Captain Trapper John McIntyre, was being pushed to the sidelines. He joined the series, excited to work with Alda, but as the series progressed, a bigger emphasis was put on Hawkeye (Alda). Rogers ultimately felt he would feel dissatisfied if he stayed on the show, and was able to leave, seeing as he never signed an official contract.

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This story was originally published April 22, 2026 at 11:03 AM.