<P> In season five, Lex becomes obsessed with uncovering Clark's secret; he breaks three metahuman criminals out of Belle Reve and sends them to the Kent Farm, where they hold several people close to Clark hostage . The scheme amounts to nothing, however, and Clark cuts Lex out of life completely upon finding out . His curiosity into the symbols, which he believes to be alien in nature, results in Brainiac (James Marsters) arranging him to be possessed by the spirit of the Kryptonian criminal Zod . In season six, Lex married Lana Lang (Kristin Kreuk) after deceiving Lana into being pregnant with his child . Upon learning the truth, Lana faked her own death and attempted to pin the murder on Lex . </P> <P> Season seven displayed Lex's descent into darkness; he has a brother - like relationship with Grant Gabriel (Michael Cassidy), the new editor of the Daily Planet newest editor, until it's revealed Grant is actually a clone of Lex's late brother . After Lex buys the Daily Planet, Grant attempts to keep Lex from being controlling, thus Lex has his brother's clone murdered and staged as a failed mugging . Lex then discovers that the previous symbols are connected to the secret organization Veritas, which his father is a part of . The Veritas members learned that an alien visitor known as "The Traveler" would arrive in Smallville during the meteor shower of 1989 . At this time, Lex realizes that Lionel has been covering up the Traveler's existence and subsequently kills his own father for it . He eventually discovers that the Veritas members knew of a means to control the Traveler, so Lex sets out to find the device . The device, an orb he finds in the mantle above a fireplace in the Luthor mansion, leads Lex to the Fortress of Solitude, where he is confronted by Clark . Having finally discovered Clark's secret, Lex uses the orb to bring down the Fortress around Clark and himself . </P> <P> In season eight, Lex is missing and Tess Mercer (Cassidy Freeman) is put in charge as Lex's hand - picked successor . Tess wants Lex found, until Lex is revealed to have a surgically - implanted nano - transmitter in Tess's optic nerve . Wanting revenge, Lex uses a kryptonite bomb to have Lana's stolen bio-enhanced suit, designed to absorb and emit kryptonite radiation, absorb the radiation to de-activate the bomb and subsequently never be able to go near Clark again without fatal effects . Oliver Queen (Justin Hartley) discovers Lex's location and uses a bomb to blow up Lex's travelling medical transport, seemingly killing him . </P> <P> Season ten revealed that Lex had manufactured a number of clones in an attempt to use to heal himself . However, the majority of these clones are flawed and would age at an accelerated rate . One clone of Lex (Mackenzie Gray), aged approximately twenty years older than the original, attempted to get revenge on Clark by trying to kill Lois Lane (Erica Durance) but died before he could finish . The 2 - hour series finale reveals Lex had used the parts of other clones to create a composite one but lacked a heart . After an alternate reality version of his father sacrifices himself to Darkseid, Lex is brought back to life through his clone . He speaks with Clark, telling his former friend he accepts they have a destiny as enemies, but neither of them can fulfill their roles unless Clark defeats Darkseid by inspiring humanity . Lex later meets with Tess, and fatally stabs his sister, however, Tess poisons him with a specialized neurotoxin that removes all of Lex's memories . The series ends by shifting seven years into the future, where Lex had been elected as the President of the United States . </P>

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