Lowly Worm is a Busytown resident and Huckle Cat's best friend.
He was first appeared in "Richard Scarry's Chuckle with Huckle."
- He did not speak until The Busy World of Richard Scarry.
- In The Busy World of Richard Scarry, he frequently breaks the fourth wall.
- Lowly announces every episode title of Busytown Mysteries.