17 Secret Video Game Bosses You Need To Beat Before You Die
5. Diablo II - The Cow King
How you get there: It's as absurd as it sounds, and a running joke in the Diablo series. When the first game in the dungeon crawler trilogy released, rumours floated around all over the place purporting to the existence of a secret 'Cow King' boss. The rumours arose due to various pieces of dialogue the player character would utter when interacting with 'normal' cows in various different ways.
It all turned out to be false, of course, but when Diablo II rolled around, Blizzard actually made the mythical secret boss a reality, making the bovine king accessible by completing the game and then returning to the first area and creating a certain recipe to to open a portal.
Why you need to beat them: If you're still playing Diablo II to this day, then you've probably already killed the Cow King an innumerable number of times already. Prior to the secret stage being nerfed into oblivion, it was extremely popular due to how profitable it was.
Now though, it's just a fun little tribute to fans of the first game who remember the original rumour with fond memories. But even if you're a newcomer to the series, it's worth killing the mad cow just to experience one of gaming's most memorable easter eggs.