Shane Alexander was the only child of Laurie Little, a Bartender at the time, and John Sevier, a Diesel engine mechanic. His mother is from Toronto, Canada, and his father was from Orange County, California. Due to both of his parents being adopted his ancestry is mostly unknown. Shane spent most of his younger years in a traditional martial arts academy where he grew up, in Hemet, California. He learned many different forms of martial arts, and eastern sword work. During his high school years, at the age of 14, he began taking theater classes. He immediately fell in love with acting and being on stage, this continued into his first two years of college, and transitioned into film work. He began working in local commercials and had minor parts in Local Indy films.

At the age of 25, Shane made the move into the stunt world, he attended David Boushey's International Stunt School, based in Seattle, WA. And also, a handful of stunt training workshops in Canada, as well as L.A. With his extensive martial arts background and professional stunt training, he began working on as many stunt jobs as he could find. Shane is fully into the stunt world but has hopes of breaking into the Producer side of the industry in the near future.