Roy Beauboff is a member of the "Dirty Dozen". He is the brother of Vern Beauboff, and although he is the smaller of the two, he is the brains of the duo. He was sentenced to hang. Roy was not originally offered a role in the "Dirty Dozen", the deal was only for his brother, Vern. But after Vern refuses to go without Roy, Danko relents and decides to let them both join.
During the mission he is shot and wounded but still manages to perform his task of cutting the phone lines. His brother Vern comes to his rescue and carries him off to safety.