If you are talking about mine, Rokk, I based them somewhat off of the stickmen in this tutorial. http://www.newgrounds.com/portal/view/288092
I also make the head and feet separate graphic symbols. I hope this helps.
EDIT: Also, thanks Floud/xoptikx for your comments on the anim. Also, Floud, when you talk about the blood going in two directions, are you talking about the very first spurt? That goes in two directions because the bullet went through his head.