Well, here he is: Ahriman. Ahriman was one of the two original creator beings of Zoroasterism (the ancient Persian religion, now only found in small communities in the near east (for example some places in Iran)). Ahriman was considered to be the creator of all bad and wicked things in the world while his counterpart, Ahura Mazda (aka Ahura the Wise), was the creator of all good things. Both beings though are considered to be the two uncreated spirits, and as such, always were.
What is most interesting about Ahriman, is that he is most likely the basis for the Christian and post-exhilic Jewish interpretation of Satan (probably in conjunction with the Babylonian Tiamat). Don't believe me? Well historical, sociological, religious, and archaeological evidence supports this hypothesis. So next time, before you go bad mouthing Satan, just remember that before coming into contact with Zoroasterism and Ahriman, he was simply believed to be the prosecutor of man in the council of heaven. If you want to blame someone for all the wickedness, blame this guy!

He is part 1 of a 3 part "Greatest Evils of the Ancient Near East" series I hope to do (I still need to do Tiamat and Set). Sorry about some of the lines you might be seeing in the shading, but I drew him on notebook paper (I need to stop doing that). Anyways, he is a serpent devil and is the actual basis for the interpretation of the snake in the garden of Eden being Satan (although, like I said before, Satan just got a bad rap).