But most of them are just... lost on our planet, taking photos, or stuck with their head in a sock... doing very human things, which is hilarious.
Also, his monsters aren't that more detailed than our creature blobs. They have some more detailed eyes, shaded limbs, and FUR. I've posted some how-to pins on our Halloween Board showing how you can draw fur if you'd like to create some furrier creatures for your Halloween artwork!
BONUS: Mateo has a blog where he actually shares the process photos he takes as he creates his artwork, and you can follow him on Facebook (here)!