Metallo (Supergirl)

John Corben, later known as Metallo, is a villain in the second season of Supergirl. He is portrayed by Frederick Schmidt.

Attempt to kill Lena Luthor
To kill Lena Luthor, Corben plans to destroy the Venture space craft on which Lena is supposed to be on its maiden voyage. He tampers with the oscillator, causing the space craft to go down during its maiden voyage. The craft is only saved when Superman and Supergirl come to the rescue. After his failure, Corben visits a black market dealer from whom he takes a futuristic drone. After learning how to fly the drone, Corben kills the dealer with it.

The DEO later learns that Lena Luthor was supposed to be on the flight. Although they believe her to be the culprit behind the sabotage, they find out soon that she is in truth the target.

With two of his drones, Corben attacks Lena during a helicopter fight. She is shielded from the bullets by Supergirl and Superman. However, Corben uses the drone's microphone to reveal to the heroes that he has more drones all over the city which are about to target civillians. Corben gives the two the choice of either saving Lena or the civillians. To save both, Superman and Supergirl split up and successfully destroy all drones. Although one of the drones manages to kill Lena's pilot, Supergirl catches the helicopter and brings it down safely.

Corben tries to kill Lena again, this time at the ceremony in which Lena is officialy taking over her brother Lex' company and renaming it to provide a fresh start after her brother's crimes. By blowing up explosives all over the place, Corben creates chaos during the ceremony. The explosives also destroy an important column inside the building which now threatens to topple over. Disguised as a police officer, Corben then approaches Lena who is relieved to see a policeman. However, Corben then draws his gun on her but is disarmed by Alex Danvers. Corben attacks Alex and gains the upper hand by drawing a second gun. Taking Alex as hostage, Corben intends to blackmail his way out when Supergirl arrives. Before he can leave, Corben is shot three times by Lena with Corben's first gun. Despite being severely wounded, Corben lives and is brought to Project Cadmus where he is given the choice between the painless death and life. Corben chooses life and is reborn as Metallo.

It is revealed that Corben was hired by Lex Luthor to kill his sister Lena, who was about to destroy his legacy.

Trivia

 * Corben is an adaption of the DC villain Metallo.
 * This is the fourth live-action appearance of Metallo; he previously appeared in Superboy, in Lois & Clark: The New Adventures of Superman and Smallville.