[5] As an actor, he is best known for portraying Johnny Domino, the lead character in the 1997–1999 television series Night Man,[6] and Agent Thompson, the assassin who kills Trinity at the climax of The Matrix Reloaded (2003).
[6] In a movie, which is largely unrelated to the first installment, McColm appears as a leading hero Nick Stone, an agent of the National Security Agency.
"[8] An editor from Comeuppance Reviews stated that "McColm is a far better central hero than, say, Frank Zagarino, and his meatheadiness contrasts well with his brother in classic ‘odd couple’ fashion.
[11] Robert W. Welkos of Los Angeles Times declared that McColm might be "Hollywood's next generation action star," following in the footsteps of Arnold Schwarzenegger and Sylvester Stallone.
Portraying Kenneth James Conway, an ex-commando and a private detective,[13] he had a chance to impress the audiences with both his martial arts skills and a perfect musculature.
[13][6][14] In a review for The Unknown Movies McColm's role was summarized positively: "He looks good, shows that he knows a fair bit about martial arts, and he does seem to be putting some effort in his performance.
"[13] Another favorable commentary was written by Action-Flix: McColm was believed to be "totally charismatic in the hero role," and his physical expression was compared to that of an "80s jock.
In the official 2021 write-up for the film review website Rotten Tomatoes, it is written that "square-jawed McColm has been an in-demand stuntman for over thirty years.