As an actor, he has been seen in such films as The Mask, Steel, Congo, Tim Burton's Planet of the Apes remake, and the 2003 vampire vs. werewolf film, Underworld.
Early 2006 saw Grevioux form two comic book imprints, Astounding Studios and DarkStorm Studios. Grevioux's Astounding Studios imprint was to focus on all-ages titles such as Valkyries, Guardian Heroes and The Hammer Kid. The Darkstorm Studios imprint was a more mature line, including the books Alivs Rex, Skull and Guns and Uzan, The Mighty.
On December 2, 2009, Grevioux hosted a pilot episode for a concept series, Monster Tracker, on Discovery Channel.
He sold the original screenplay for the film adaptation of his Darkstorm Studios graphic novel, I, Frankenstein, to Lakeshore Entertainment, which also produced the Underworld films. The story follows the original Monster of Victor Frankenstein who is the only force that stands between the human race and an uprising of supernatural creatures determined to overthrow the world. Filming began on February 27, 2012.
Since November 6th, 2017, Line Webtoon has been publishing Brothers Bond, an action webcomic collaboration with Ryan Benjamin.
