Powers actor Justice Leak has joined the cast of Supergirl as the villain Hellgrammite, Entertainment Weekly reports.

In DC Comics, Hellgrammite is an entomologist transformed into a humanoid bug-like creature by an experiment, but the report suggests the TV version will instead be an alien. In the comics, Hellgrammite’s powers include super-strength, enhanced hopping abilities, and trap others in his cocoons and transform them in larvae.

Hellgrammite has appeared in animated form previously as part of Justice League Unlimited and Batman: The Brave and the Bold.

Supergirl premieres Monday, Oct. 26 at 8:30 p.m. ET on CBS.