Henry Ross is a wealthy socialite, the father of Susan Biddle Ross, George's fiance. He is married to Mrs. Ross. He also has a son, Ricky, and a sister, Sara.
He is extremely judgmental and has a mean streak. He particularly dislikes Frank Costanza, especially after he steals the marble rye back from Henry.
He appears to be rather kind to some people, giving George a box of Cuban cigars.
He is extremely fond of his cabin upstate, which was built by his father in 1947. After Cosmo Kramer burnt it down, he apparently was extremely upset, though his reaction is not shown onscreen.
Henry Ross had an affair with author John Cheever, who wrote him a series of letters which were found after his cabin burnt down.
He and Mrs. Ross form the Susan Ross Foundation to honor their late daughter. They make George a member of the Board of Directors, much to George's dismay.
* Matlock