A charging Ork slugga boy.
I cut off his right leg as near to the groin as possible and then rotated it. I glued it in place and then filled a little with green stuff and then tidyed it up with a file.
To make the running pose look "real", you should pick arms that make the pose look unbalanced.
His hair was added using green-stuff. A toothpick was used to model vertical lines along the sides and to detail the top.
His left hand originally held the chainsword. I cut off his whole hand and replaced with with a hand holding a slugga.
His right hand originally held an axe but I cut this away and replaced it with the chainsword salvaged from his left hand.