Following the premiere episode "Zod," Clark accidentally releases several "Phantoms"—dangerous interplanetary criminals—from the Kryptonian Phantom Zone. A major season-long arc involves Clark hunting these escapees to prevent them from destroying Earth.
This season features the controversial marriage between Lana Lang and Lex Luthor. Lex's obsession with Clark's secrets and his "Project 33.1" (a plan to experiment on meteor-infected individuals) pushes him further toward becoming a full-blown villain. Smallville - Season 6
Season 6 officially marks the first team-up of DC heroes. The episode " Justice " (S6E11) is a fan favorite, featuring the Green Arrow (Oliver Queen), Cyborg, Aquaman, and Impulse working together to take down one of Lex's secret "Project 33.1" facilities. Following the premiere episode "Zod
