He was raised by his parents, Mike and Nancy, on Salt Spring Island, British Columbia.

[4] Greyston's maternal grandmother, Anna Horvath also immigrated from Hungary with her parents in 1927.

He also took an acting class for the "extra credits" and fell in love with a new avenue of expression.

After small roles in major television shows like Smallville, Blood Ties and The 4400, he was cast in a recurring role in Durham County for which he was nominated for a Leo Award for Best Supporting Performance by a Male in a Dramatic Series.

[2] His biggest role was being cast in Space fantasy/horror TV series Bitten[3] for which he received another "Leo Award" nomination.