and Jack often compete with one another. In the episode "Best Man" she asks Helga to be her maid of honor in her wedding. Tucker Wittenberg (voiced by Grant Gelt) is Jack's son who is a student of PS 118. In the episode Benchwarmer, his dad kept putting him in the game even though he did not think it was fair to his teammates until he stood up to his dad after he benched Arnold and his dad apologized to Tucker and Arnold for his actions. He and his parents made a cameo in The Jungle Movie. Various Rex Smythe-Higgins (voiced by Tony Jay) is Grandpa's nemesis from when he was a child, of an esteemed British family, and often shown to have cheated against him in the past Rex Smythe-Higgins III (voiced by Joey Stinson) – His grandson, and similarly a rival to Arnold. However, unlike their grandfathers, the two have a respect for each other as they shook hands following Arnold winning a boat race which Rex refused to cheat in, and Rex even siding and helping Arnold rescue his pig Abner when his grandfather wanted to eat him. Dino Spumoni (voiced by Rick Corso) is a famous jazz singer based on Dean Martin and Frank Sinatra. In the episode "School Dance" he performs at Arnold's school dance but sings a very depressing song which causes Arnold's friends to get angry with him and after having a heart to heart conversation with Arnold in the dressing room he changes his tune by singing an upbeat song and having everyone dancing in the cafeteria where the dance was being held in. In the episode "Dino Checks Out" he fakes his death to have his record sales improve. Later in the episode, it is revealed that he lived in Arnold's grandparents' boarding house where he used to work as a construction worker and use to perform at night. Later in the episode, it is revealed that Dino wears a toupee on his head and had multiple marriages. He's Italian American. Don Reynolds (voiced by Harvey Korman) is Dino Spumoni's estranged, bitter partner and songwriter. Mr. Bailey (voiced by Vincent Schiavelli) is a worker of the Hall of Records. His first appearance is in the Christmas special, where Arnold comes to him to help find Mr. Hyunh's daughter, Mai. His second appearance is in the series' feature film, where he helps