Doomsday (Doomed Metropolis)

Doomsday rampages through Doomed Metropolis, surrounded by a deadly plague, and even Superman is struggling against the monster.

Doomsday is found in the Doomed Metropolis open world zone as part of The Death of Superman. Marked by a skull icon on the minimap similar to other episodic bonus bosses (such as Starro Conqueror and Giant Robot) and also heralded by large red messages given to all players in the open world zone, Doomsday nevertheless has a few differences. He has extremely high health, much more so than his peers, but he is not "defeated" in the traditional sense and he instead retreats when his health is down to about 90%. He is also not confined to an area and can be found wandering throughout the open world zone and battling Superman. Finally, he is surrounded by a plague aura so deadly it will kill any player within seconds - Doomsday Plague Probiotic is vital in surviving him.