Cl ark ). ▁When ▁the ▁secret ▁is ▁un cover ed , ▁Lex ▁mur ders ▁his ▁father , ▁real izing ▁he ▁has ▁been ▁covering ▁up ▁the ▁Tra vel er ' s ▁existence . ▁ ▁Season ▁ten ▁reve als ▁that ▁T ess ▁Mer cer ▁( C ass id y ▁Fre eman ) ▁is ▁Lion el ' s ▁il leg it imate ▁daughter , ▁father ed ▁with ▁Lex ' s ▁n anny ▁Pam ela ▁Jenkins ▁( Don na ▁Bul lock ). ▁In ▁" L ut hor ", ▁Clark ▁Kent ▁un int ention ally ▁vis its ▁a ▁parallel ▁universe ▁where ▁Lion el ▁found ▁and ▁adopted ▁Clark ' s ▁native ▁universe ▁counter part . ▁Lion el ▁raised ▁his ▁adopted ▁son ▁( known ▁as ▁Clark ▁L ut hor ) ▁to ▁be ▁a ▁murder er , ▁going ▁by ▁the ▁alias ▁Ul tr aman ▁who ▁k ills ▁anyone ▁in ▁his ▁way ▁including ▁that ▁universe ' s ▁Lex . ▁When ▁Clark ▁Kent ▁esc apes ▁back ▁to ▁his ▁own ▁reality , ▁Lion el ▁follows ▁him . ▁Pos ing ▁as ▁his ▁own ▁do ppel g änger , ▁Lion el ▁tries ▁to ▁make ▁am ends ▁when ▁he ▁attempts ▁twice ▁to ▁bring ▁" Alex ander ▁L ut hor "/ Con ner ▁Kent ▁( L uc as ▁Gra be el ), ▁a ▁hy brid ▁clone ▁of ▁Clark ▁and ▁Lex ▁that ▁develop s ▁Clark ' s ▁powers , ▁to ▁his ▁side ▁but ▁fails . ▁Lion el ▁also ▁assumes ▁control ▁of ▁L ut hor Cor p ▁from ▁T ess ▁but ▁los es ▁the ▁company ▁when ▁his ▁do ppel g