THE RED HAIR DEMON by Mirza
Mirza asks, "Although the men in this picture are demons, they still look handsome, don't they?"
This is a translation (slide) tessellation. You can tell it's a translation tessellation because the demons are all the same shape (not flipped or altered) and at the same angle.
Here's an artistic point to consider: Demons, monsters, and aliens are a good choice if you're looking for a theme for your own tessellation. Why? Because they're flexible. Who can say if a demon is supposed to have two arms, or three, or six? Who can say if their body is watermelon-shaped, or boxy? Who can say if the arms on a demon all have to be the same size? Read more about choosing demons, monsters, and aliens as your tessellation theme here, in tessellations.org's do-it-yourself section.
IS this a tessellation, though? Well, "YES" if you think of each head as NOT a head, but rather as an abstract shape. However, the answer has to be "NO" if we think of these as heads. Why? ...Because then we expect necks and bodies, but those are hidden from us behind other heads. In a tessellation, we don't allow overlaps.