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Ratworms are a species of beast demon native to the Boiling Isles. They appear to be popular riding animals for witches.


As their name implies, ratworms possess many characteristics resembling real-world worms and rats. Ratworm bodies are limbless and resemble those of segmented worms, such as the earthworm. Their defining characteristic is their rat head.


Head Witch Eberwolf riding a ratworm.

A pair of ratworms make their debut appearance in "Once Upon a Swap" when Boscha challenges King (in Luz's body) to a race on Dead Man's Curve. Despite their limbless bodies, ratworms are very extremely fast creatures and can maintain their top speed for an extended period of time; careless witches can find themselves either crashing or unable to stop a ratworm at top speeds.

Beast Keeping Head Eberwolf rides a ratworm in "Eda's Requiem" during Raine's induction as Head Witch of the Bard Coven, suggesting that ratworms are ridden outside of races. Eberwolf can also summon and control said ratworm by using their Beast Keeping magic, and "Knock, Knock, Knockin' on Hooty's Door" classifies ratworms as Beast Demons.