Mr. and Mrs. Henry Ross are Susan's wealthy parents and would have been George's in-laws. Susan's parents are severely dysfunctional: Susan's mother is an alcoholic and Susan's father had a homosexual affair with John Cheever. They originally owned a cabin that was in their family for generations, but Kramer burned it down with one of the Cuban cigars Susan's father gave to George. They eventually rebuilt the cabin, but discovered among the wreckage were letters revealing John Cheever's affair with Mr. Ross. Mr. Ross simply told his wife, "Yes, he was the most wonderful person I've ever known, and I loved him deeply, in a way you could never understand." Despite their troubled marriage, they remained together.
After Susan's death in "The Invitations," her parents started the Susan Ross Foundation, a charity organization named after her, and George sat on the board of directors, much to his own distaste.
In “The Wizard”, Susan's parents admitted that they blamed George for Susan's death when they accompanied him to the Hamptons.
They appeared in “The Finale” where they attended the trail of Jerry, Elaine, George, and Kramer in Latham County. After Dr. Wexler mentioned about Susan's death, Henry accused George of being a murderer while Mrs. Ross claimed that George knew the envelopes she licked were toxic. While the jury was deciding the verdict, Henry was seen purchasing a gun, possibly to kill George. He and Mrs. Ross were among those thrilled that George, Jerry, Elaine, and Kramer were found guilty.
Mr. and Mrs. Ross also have a son, Ricky.