The Goat from Goat Simulator may Appear in DotA 2
Now I know what you may be thinking. How on earth is the Goat from Goat Simulator meant to fit into the world of Dota 2? Well, the answer to that question is not very well, but couriers (small creatures which the players of Dota control to ferry items) in Dota are generally quite out of the box.
Generally, cosmetic items in Dota try to fit into the world, at least in the visual style. There is only one major exception (the Alpine Stalker Ursa set, which was subsequently removed from the in-game store) but that example withstanding all of the cosmetics in Dota fit within the world. Couriers are an exception, there are several couriers which do not by any stretch of the imagination fit into Dota, the Deathripper from Warmachine being a prime example.
Normally when couriers are being made, their "fitting" in doesn't matter. The same goes for announcer packs. There are several odd and hilarious announcer packs out there, ranging from the dulcet tones of Bastion's Narrator, or The Stanley Parable's Narrator. And as mentioned before, couriers aren't completely out of the question when it comes to world breaking. Whether or not the courier gets into the game itself, is still up in the air. The item has to go through the Steam Workshop, meaning the public has to vote on if the courier is able to be put into the game.
So for now, enjoy the wacky video Coffee Stain Studio's made for their courier, if anything, it's a good little laugh.