That is 100% Slithice, the Naga Siren of Dota 2. I don't care what the artist says, or what the uploader claims. Staple my nut-stack to a brick if I'm, wrong. Fuck literally any other source material. I promise you, nothing predates the character design of Naga Siren of even the DotA All Stars era. So. As far as my 10 points of tagging power are concerned, this is fan art of DODA. I spent thousands of hours and never got gud at the game. Puncture my ball sack if I'm wrong, protip I'm not.