You'd probably be looking at a 2003 Teenage Mutant Ninja Turtle Leonardo from the cartoon series. But based on what Shinigami said and the picture, that would be Scootin Leo.
it looks like its from this, but the colors off..or maybe its just your camera's lighting? I've seen a few people use leo's sheaths and swords for deadpool
http://www.tmnttoys.com/03figures/xgames/index.html
I've seen a few people use leo's sheaths and swords for deadpool