Superman Doomsday is a 2007 animated adaptation of The Death of Superman by DC Comics. When Lex Luthor's (James Marsters) scientists at Lexcorp are working on a project, they discover a mysterious spaceship buried deep in the ground. They soon realize that Doomsday (Tom Kenny), a bio-engineered supervillain from the planet Krypton, is inside of the spaceship. When Doomsday escapes from the ship, he begins to kill everyone that he meets and creates a path of destruction as he moves towards the city of Metropolis. Superman faces off against Doomsday, but he dies from his injuries after the battle. As his girlfriend, Lois Lane (Anne Heche), and the rest of the public mourns his death, criminals begin to wreak havoc in Metropolis. When Superman suddenly reappears, the citizens think that they are saved. However, Lois soon realizes that Superman is acting very strangely and is suspicious that he is not who he appears to be.