American actor, born 1966 and later famous for Supernatural and The Walking Dead, who played a Xindi-Reptilian sent to 2004 Detroit in the Enterprise episode Carpenter Street.
Jeffrey Dean Morgan is an American actor known as John Winchester in Supernatural, Denny Duquette in Grey's Anatomy, the Comedian in the film Watchmen and Negan in The Walking Dead.
Before those roles he appeared in Star Trek in the third-season Enterprise episode Carpenter Street, buried under full Reptilian make-up. Morgan plays Damron, one of three Xindi-Reptilians who have travelled back to Detroit in 2004 to develop a bioweapon from human blood samples collected for them by a local man.
Archer and T'Pol, sent after them by the temporal agent Daniels, track the group to a factory and stop them releasing the virus. Morgan has since recalled the heavy prosthetics as an uncomfortable experience.