Justin Slayer’s career in porn started during his college days. A highly-sexed athletic prodigy, Justin was heavily involved in the underground swinger scene, throwing sex parties that grew very popular. It was at one of these parties that he met the porn queen Diana and Alex DeVoe; during their discussion, she planted a seed of the notion that Justin should try performing in videos. At the time, he was working as a personal trainer and winning bodybuilding competitions (he placed high in the World Natural Championships).

At a private orgy, porn star Marie Silva was impressed by Justin’s sexual prowess and stamina, and invited him to do a boy/girl photo spread for Penthouse with photographer Tony Ward. This led to his screen debut in a gangbang scene for Anabolic Productions in 2001. Justin teamed with a New York partner under the name Buck Brothers Films; he shot some scenes in Costa Rica and directed and distributed the four-volume series Whose Pussy is This? Meanwhile, Diana DeVoe was at West Coast Productions, and convinced Justin to work there by performing in mainly group sessions in flicks like Black Cravings 9. This led to a directing gig with West Coast, and the series Freshly Slayed. Soon afterwards, he moved to Exquisite Multimedia and started Slayer Unleashed, the Phatty Girls and Black Pipe Layers series and Big Butt Brotha Lovers - which caught the eye of John Stagliano.

In 2004, Slayer joined the elite ranks of Evil Angel directors, and has since produced such infamous and top-selling works as Mami Culo Grande, Big Booty White Girls and Black Orientations, and continued two of his most successful series, Phatty Girls and Black Pipe Layers.