Superman: Doomsday is NOT a Superman cartoon for the kiddies. On the contrary, this straight-to-DVD feature is pretty adult, a fact quickly established in the first ten minutes when Doomsday, the unstoppable devastator from the early 90’s “Death Of Superman” story-arc, brutally murders a team of Lexcorp researchers who unwittingly unearth him, while Lex Luthor himself puts a pistol to the head of a female assistant and blows her brains out.