The series, from Roberto Orci and Alex Kurtzman (Sleepy Hollow), chronicles the life of Tony Bravo (Gabriel Luna), a CIA agent recruited to go undercover as a rising soccer star for the fictional LA Riot, owned by corrupt billionaire Andres Galan (Alfred Molina).
Callis, whose recent credits include Eureka and CSI, will play Lucien Sayer, a mysterious man with power and influence over a fraternity of elite businessmen and politicians from all over the world.
Matador premieres July 15 at 9/8c on El Rey Network.
Can you believe that Sandra Bullock is 50? See who else is marking the milestone this month: