Season 6 provided the show's first glimpse into the Phantom Zone. The destinies of Lionel and Lex play out in the aftermath of Lex's possession by Zod and Lionel's adoption as the oracle of Jor-El. Several criminals escape the Phantom Zone with Clark, and DC Comics characters Jimmy Olsen, Oliver Queen and the Martian Manhunter are introduced this season, and the first glimpse of the Justice League is seen when Victor Stone, Arthur Curry, and Bart Allen all return to Smallville. Lex's relationship with Clark is completely shattered as his relationship with Lana progresses. Lana soon discovers she is pregnant and decides to accept his proposal of marriage.
Lana and Lex's relationship dissolves when she discovers the truth about her pregnancy while simultaneously discovering Clark's secret. She tries to leave Lex and Smallville with disastrous consequences. As Lex, Clark, and Lionel all search for the missing Phantom Zone escapees, Lex's Level 33.1 project advances dangerously. It becomes personal for Lois when Lex exploits one of her childhood friends and she vows to take him down. Lois and Clark have there first kiss, shadowing their future relationship. Chloe begins a relationship with Jimmy Olsen, but also discovers that she has a mysterious, latent meteor power. Martha Kent moves to Washington, D.C., to represent Kansas in the US Senate.
- Tom Welling as Clark Kent
- Kristin Kreuk as Lana Lang
- Michael Rosenbaum as Lex Luthor
- Erica Durance as Lois Lane
- Allison Mack as Chloe Sullivan
- John Glover as Lionel Luthor
- Annette O'Toole as Martha Kent
|Smallville Television Series|
|Seasons||1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10|
|Webisodes||Chloe Chronicles • Smallville Legends: Kara and the Chronicles of Krypton|
|Print Media||Novels • Comic Books (Smallville • Visions • Season 11 (Alien • Lantern) )|
|Characters||Clark Kent • Lana Lang • Chloe Sullivan • Pete Ross • Whitney Fordman • Lex Luthor • Lionel Luthor • Martha and Jonathan Kent • Lois Lane • Kara Zor-El • Davis Bloome • Oliver Queen • Jason Teague|