Hairy arms and all.
This wonderful little mod by MyNameIs adds stuff like D.Va's mech from Overwatch to Doom (well, GZDoom, the modern platform for it). It's more than a quick little joke: once summoned, you can stomp around the map shooting stuff to your heart's content.
The mod, called OverDOOM, also introduces a bunch of other Overwatch weapons to the classic shooter, as you can see in this video by DrUberWaffles.
If you want to download the mod, you can grab it here.