when does the flash show up in smallville
Justice League (Smallville) Although the Justice League first appeared in season six's "Justice", each member had their own introduction and recurring storylines in the series prior to the formation of the team. The first member to appear on Smallville, other than Clark Kent (Tom Welling), was Bart Allen (Kyle Gallner), who was introduced in the season four episode "Run". In the episode, Bart is the first person Clark discovers to have a superhuman ability—being able to run at supersonic speeds—that was not created from exposure to kryptonite. When Clark and Bart first meet, Bart is a pickpocket who saves Jonathan Kent (John Schneider) from being hit by a truck. Eventually, Clark convinces Bart to give up his life of crime.[1] Arthur Curry (Alan Ritchson), who has the ability to swim at superhuman speeds and create energy blasts through the water, is next to appear in the season five episode "Aqua". Arthur arrives in Smallville to stop an underwater weapon developed by Lex Luthor (Michael Rosenbaum), which is killing the surrounding ocean life. Arthur and Clark initially clash on Arthur's tactics; Arthur tries to blow up Lex's lab, while Clark insists that they should simply talk to Lex face-to-face and ask him to stop. Eventually, Arthur and Clark locate and destroy the weapon outright.[2] Season five also introduced Victor Stone (Lee Thompson Young) in the episode "Cyborg". Here, it is revealed that Victor was mortally wounded in a car accident that also took the lives of his family, but Lex's company, LuthorCorp, took Victor's body to a research lab where they experimented on him—ultimately replacing his bone skeleton with a metal one. Clark attempts to provide Victor with a safe haven after Victor escapes from Lex's facility. Clark manages to convince Lex to stop hunting Victor, who eventually leaves Smallville with his girlfriend.[3]