Main Cast
Tyler Hoechlin as Kal-El / Clark Kent / Superman: A superhero from Krypton who defends Earth and is Lois' husband.
Elizabeth Tulloch as Lois Lane: A journalist at the Metropolis newspaper the Daily Planet and Clark's wife.
Jordan Elsass as Jonathan Kent: The modest and kind-hearted son of Clark and Lois.
Alexander Garfin as Jordan Kent: The intelligent son of Clark and Lois who has social anxiety and enjoys playing video games alone.
Inde Navarrette as Sarah Cushing: Kyle and Lana's "wild child" daughter who befriends the Kent boys.
Dylan Walsh as Samuel Lane: Lois' father, a no-nonsense, workaholic Army general who is determined to keep America and the world safe from all threats.
Emmanuelle Chriqui as Lana Lang: An old friend of Clark Kent and the loan officer at Smallville Bank.
Erik Valdez as Kyle Cushing: Lana's husband and Smallville's fire chief who enjoys his life living in a small town and is wary of those from bigger cities.
Wolé Parks as The Stranger: "A mysterious visitor hellbent on proving to the world that it no longer needs Superman."
Adam Rayner as Morgan Edge: "An intelligent, eloquent and impassioned self-made mogul".
Recurring
Sofia Hasmik as Chrissy Beppo: A "go-getter" journalist at the Smallville Gazette who has a "chance encounter" that changes her life.
Stacey Farber as Leslie Larr: Someone who works with "the most influential people on the planet".
Joselyn Picard as Sophie Cushing: "Spirited and rebellious" younger daughter of Lana Lang and Kyle Cushing.
Angus Macfadyen as Jor-El: Clark Kent's Kryptonian father. Though he died along with Krypton, his brilliant essence still exists within the arctic Fortress of Solitude to provide guidance when his son seeks help.