Young Bean moves to the Muppet Kids' neighborhood in the 1992 book New in Town. He has crippling "shyness attacks" and avoids all contact with other kids, even when they're trying to be friendly. He finally makes friends with Kermit and Fozzie when he discovers a mutual interest in staying dry during a rainstorm.
In the Muppet Kids series, Bean and the other Muppets are the same age, whereas in the "adult" Muppet world, Bean is much younger than the others.
Bean is the only post-Muppet Show character to appear in both adult and infant form.