The Final Destination star Campo will play a mortician named Max, Deadline reports.
The actor has recently appeared in episodes of Law & Order: Special Victims Unit and CSI: Miami.
Being Human was officially picked up for a third season by Syfy in February.
24 and Nikita actor Xander Berkeley will appear in eight episodes as a vampire hunter.
The new season begins on January 14, 2013 on Syfy.
> Being Human star Sam Huntington joins Warehouse 13
Watch a clip from season two of Being Human below: