Achilles is a Greek street artist based in Athens.
Achilles is known for creating amazing portraits on the walls of Athens mostly using just spray-paint.
He also likes to create pieces with inverted colors as you can see in the third image.
Interesting technique that incorporates inverted colors. On the left is the original image, on the right is an edited image.
Click here to see Achilles’ mural titled “Selfie”!