Jimmy Durante

Jimmy Durante was an American singer, pianist, comedian, and actor

History
When Grampa was walking whilst sad, the blue-haired lawyer came along and told Grampa that he represented the estate of Jimmy Durante and he had a court order demanding an immediate halt to the unauthorised imitation Grampa was doing.

He was one of the Hollywood stars seen departing the train along with Shirley Temple, W. C. Fields, James Cagney, Laurel & Hardy, and Boris Karloff as Frankestein's Monster in a Grampa's flashback.