15 Hidden Video Game Bosses You Never Knew Existed

The Cow King – Diablo 2

To fight the beefy Cow King you need to first enter the Secret Cow Level. This requires a series of complicated steps, not the least of which includes creating a specific recipe, and then go to a specific corpse in Tristram. Then you can slash through hordes of militarized bovine, eventually taking on the Cow King, the giant, blue, muscular bull that swings a massive axe across the screen. His presence may be a joke, but he is not.