Lowly Worm is a Busytown resident and Huckle Cat's best friend/pet. He often stays with the Cats as a house guest. Although he attends school with the Cat children, Lowly can also be seen in more adult situations, like driving a street sweeper or working in the operating room of the Busytown Hospital.
In The Busy World of Richard Scarry, he was voiced by Keith Knight.
In Busytown Mysteries, he was voiced by Paul Wensley.
- He did not speak in Richard Scarry's Best Videos Ever until The Busy World of Richard Scarry and Busytown Mysteries.
- In The Busy World of Richard Scarry, he frequently breaks the fourth wall.
- Lowly announces every episode title of Busytown Mysteries.
- He wears a Tyrolean hat, a brown or red shoe on the end of its tail, a blue and green tube on his body (intended to resemble a sleeveless shirt and one-legged trousers) and a red bow tie.
- He rides in the apple that looks like a helicopter.
- His skin colors are light, plain or dark brown, pink, orange, peach or gray.