Shen from league of legends More
Google Image Result for http://upload.wikimedia.org/wikipedia/commons/4/40/Ninjaaa.jpg
Night Stalker by Lee Kent (detail)
Exotication... | sekigan: Lee JeeHyung (@leejeehyung) | DrawCrowd
-Mudra - Ninja Hand Signs-
Robot Ninja by jeffchendesigns on DeviantArt
http://magnoren.tumblr.com/ edit: Updated the colors a little bit. I hope no one takes offence!
Mathias Verhasselt ConceptArt.org sketchbook. Killing it!
Ronin Black by Alegion.deviantart.com on @DeviantArt
Shurikens (set 2) - Sale! by Rittik-Designs