The long lost Marine relative is played by Charles Esten, best known for Whose Line Is It Anyway? (1998) and Nashville (2012).
The character of Rick is played by Richard Danielson. He is wearing his own leather jacket which has his name written on the back.
Cliff Clavin, whose motor mouth unintentionally provokes trouble, is ironically the only series regular who was only once in a physical altercation. Sam Malone kissed his best friend on the lips as part of a "Let's pretend to be lovers" charade aimed at Rebecca, that didn't include kissing, which prompted Sam's friend to punch him in the face. Off-camera, Dr. Lilith Sternin-Crane's road rage sailor mouth while Sam was teaching her how to drive prompted a fight between him and a motorist. Also off-camera, Dr. Frasier Crane was involved in a sports event scuffle while in attendance at a hockey game. Woody Boyd was involved in a "domino effect" bar fight that ensued at Cheers. Off-camera, his wife Kelly Gaines' then-boyfriend punched Woody in the face. Norm Peterson got into a "match" at Cheers with his high school wrestling buddy who tried to make a pass at Vera after finding out that she and Norm were separated. Cliff Clavin came close twice: when a bar patron who was fed up with Cliff's know-it-all banter, wanted to step outside with him, and when Cliff said something disrespectful to Frasier about his wife, Lilith. The only time he actually came to blows with anyone was a Carla's husband's funeral when he joins in the fight with the hockey team.