As an actor, Kevin has been seen in such films as “The Mask”, “Steel”, “Congo”, Tim Burton’s “Planet of the Apes”, and the cult classic film, “Underworld”. His voice credits include “Young Justice”, “The Avengers”, and “Batman Beyond”. “Underworld” was Grevioux’s first produced writing credit. He came up with the original concept/premise and wrote the original screenplay along with director Len Wiseman, launching the Underworld” franchise. He appears in the film himself as a lycan, Raze, and returned as the character in the Underworld prequel “Underworld: Rise of the Lycans”, which he will also be adapting into a comic book mini-series. Using Romeo and Juliet as an archetype, Grevioux based “Underworld” on his experiences with interracial dating and the tension that it often causes.
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”. Grevioux's comic writing credits include Marvel Comics’ “New Warriors”, “Spider-Man”, and “Young Avengers” and DC's “Cyborg”, “Batman”, and “JSA”. He sold the script for the film adaptation of his Darkstorm Studios graphic novel, “I, Frankenstein”, to Lakeshore Entertainment. In 2017 he released Brothers Bond with collaborator Ryan Benjmain for which he was nominated for the 2018 Eisner Award for Best Webcomic.