Supergirl has cast Charles Vance as the villainous Kryptonian Non, according to the Hollywood Reporter. Vance starred in Transporter: The Series.

Non is described as “a former scientist in a league with the House of El. Non is a brutal Kryptonian military officer who is sinister, powerful and angry.” Non is said to represent the opposite of everything Supergirl (Melissa Benoist) stands for, and will become her greatest threat.

Vance will debut as Non in episode eight of the series.

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