The sixth season of Smallville, the US teen drama charting the early years of caped crudader Superman, includes arguably two of the most exciting events in the show's history: the formation of the Justice League, and Lex Luthor finally embracing his dark side and becoming the villain we all know from the comic books and classic films. This chapter of the much-loved TV show is filled with plenty of juicy storylines, particularly the love triangle between Clark Kent (played by Tom Welling), Lana Lang (Kristin Kreuk) and Lex Luthor (Michael Rosenbaum). Characters from the original DC Comics are also introduced, with Green Arrow as a love interest for Lois Lane and Jimmy Olsen a beau for Chloe. Added drama comes in the shape of guest character Martian Manhunter, who previously worked for Clark's biological father Jor-El and was sent to aide Clark in his journey. The series ends with a bang, the fallout from which will dramatically change the shape of Smallville in seasons to come.