Mr. Sanban (voiced by Keone Young) is a minor villain of the 2002 animated series Code Name: Kids Next Door and also one of the three secondary villains of the 2006 animated horror film Alvin and the Chipmunks: Crime Investigation. He is the abusive husband of Mrs. Sanban (Lauren Tom), and also the abusive father of both Kuki (also played by Lauren Tom) and Mushi (Tara Strong).
In the early summer of 2006, Mr. Sanban, while passing through Monterrey Park with fellow bikers Vetvix (Vanessa Marshall) and the Joker (Jeff Bennett), stops at a convenience store, where he and his friends start harassing three customers named Brittany (Christina Applegate), Jeanette (Anna Faris), and Eleanor (Amy Poehler). Grabbing Brittany and Jeanette with Vetvix, Mr. Sanban holds both of them, while the Joker taunts Eleanor, making her ask for Brittany's earlier thrown pink wallet and call him "Sir". When the Joker eventually does give Eleanor the pink wallet, both Mr. Sanban and Vetvix let go of Brittany and Jeanette.
Shortly, after having their motorcycles damaged by Jeanette (due to her clumsiness) as revenge for troubling her, Brittany, and Eleanor, Mr. Sanban and his companions follow the three girls to the suburbs of Riverside, where Mr. Sanban keeping lookout signals for his friends to come out of hiding when the coast is clear. Along with Vetvix, Mr. Sanban begins siphoning gas from Shaggy Rogers' green Mazda sedan, planning on using the fuel to set fire to the old house. When Vetvix fills up a canister of gas, Mr. Sanban grabs it and heads to the old house, where he finds the Joker, who had earlier wandered off, happily swinging from a suspended rope and rake on the third floor of the old house for fun. Demanding the Joker to come down this instant and help him, Mr. Sanban fails to notice Donald Walls (posing as Theodore Seville), grab him by the head, take him inside to the attic, and kill him in cold blood. Going into the haunted house to look for the Joker, Mr. Sanban climbs onto the third floor and goes to the attic, where he finds the Joker dead, having been pinned to an attic rafter by the throat with a sharp pitchfork.
Staring in horror at the Joker's corpse, Mr. Sanban is ultimately attacked by Theodore/Donald, who stabs him to death by the stomach with another sharp pitchfork. After killing Mr. Sanban in cold blood, Theodore/Donald rolls his corpse like a sushi onto the bottom floor of the old house and later hangs him upside-down from a dead tree. However, Mr. Sanban's corpse, still hanging upside-down from the dead tree, is later found and eventually taken away by the paramedics.