Captain B. J. Hunnicutt

B.J. Hunnicutt arrives at the 4077th a devoted newlywed and new father, freshly drafted from civilian life in California. Easygoing and morally sturdy, he becomes Hawkeye's roommate and closest confidant, matching him prank for prank in the swamp while carrying a steadier, more settled temperament underneath the mischief.

Farrell plays him as decency without dullness — a straight man who is never merely straight, capable of the same wild schemes as Hawkeye but grounded by real homesickness and a marriage he actually misses. That warmth gives the show's chaos a fixed point, and his quiet exhaustion at the war's absurdity lands harder for how rarely he complains.