DOOM: 17 Easter Eggs, Secrets & References You Must Find

11. The Dragonborn - Skyrim

Being Bethesda are behind publishing duties, you better believe they gave iD Software permission to use some of their iconic characters and artwork. As such, the legendary Dragonborn has apparently also perished at the hands of the demonic horde, resulting in only his helmet being left behind.

As is also customary when referencing Skyrim in any capacity, there's an arrow sticking out of his knee (which if you somehow don't know its significance, relates to a line of dialogue from various guards in the game, as to why they had to quit certain lines of work).