which actors starred in it?
Justin Hartley and Callum Blue, to name a few.
Smallville
Justin Hartley becomes a series regular as Oliver Queen (Green Arrow) after being a recurring guest in season six. In the ninth season Major Zod (Callum Blue) 
when does lana find out clark's secret UNANSWERABLE by whom is the first character portrayed? Kristin Kreuk. is this character a part of a tele series or a movie? Television series. how was this character received by the public? Positive reviews. has she been portrayed in other media as well? Yes, in comic books. by whom was the show directed? UNANSWERABLE what is the genre of the show? American superhero television series. by whom has it been produced? Alfred Gough and Miles Millar. which other characters are part of it? Clark Kent, Jor-El, Lex Luthor and Brainiac, to name a few.
wiki:17868554
Smallville [SEP] Series overview
Justin Hartley becomes a series regular as Oliver Queen (Green Arrow) after being a recurring guest in season six. In the ninth season Major Zod (Callum Blue) and other members of Zod's military group are revived (without their Kryptonian powers) by Tess Mercer, and their efforts to regain their powers are the season's central conflict. The final season revolves around Clark's attempts to lose his doubts and fears and become the hero he is meant to be, while confronting his biggest challenges: the coming of Darkseid and the return of Lex Luthor.