(written from a Production point of view)
Lamont D. Thompson is the actor who appeared as an alien pilgrim in the Star Trek: Enterprise first season episode "Cold Front" in 2001. His costume was sold off on the It's A Wrap! sale and auction on eBay.  Thompson is credited as "N.D. Alien Pilgrim" in the end credits of the episode and filmed his scenes on Wednesday 10 October 2001 on Paramount Stage 8 and 18.
Thompson has also appeared on such television shows as Frasier (starring Kelsey Grammer), JAG (starring Scott Lawrence), Complete Savages (starring Keith Carradine), NCIS (with Larry Cedar), Malcolm in the Middle (with Steve Vinovich), Huff (with Matt McCoy and Anton Yelchin), and Boston Legal (starring William Shatner and John Larroquette, in an episode with Henry Gibson, Pamela Segall, and Ivar Brogger). In 2006, he had a recurring role on the popular WB series The O.C., working with the likes of Daphne Ashbrook, Rosalind Chao, Alan Dale, and Michael Nouri.
In 2007, Thompson made his film debut as a police officer in the comedy Evan Almighty. This film also featured fellow Star Trek alumni Gregg Daniel, Bruce Gray, William Dennis Hunt, Harve Presnell, Tucker Smallwood, and Ruth Williamson.