Worm Master is a character appearing in Irregular Webcomic!, in the short-lived "Supers" arc.
Official Site Biography
While working at a commercial earthworm farm, Andy Annelid slipped and fell into a vat of worms. His primal screams of terror had a psionic influence on the worms, and they moved willingly away from him! Now, simply by concentrating, he commands the loyal service of worms of all types. The worms follow his direction, but gain no special powers such as increased speed, or toughness, or ability to withstand dry environments.