Who is Blood and Guts Couch Potatoes from Back to the Bedroom and what is their importance?

The Blood and Guts Coach Potatoes are a group of Dave's friends, who've come together to create a group that meets once a week to play whatever game is in season (football, basketball, etc..). They also band together to accomplish other tasks as well, such as moving Elsie's furniture in and helping Kate when she breaks her foot.