If his bullets don't hurt you, his terrible rhymes will.
Born in Sydney, Australia, Sebastian Bludd trained with the SAS and the French Foreign legion before becoming a mercenary. He has a brilliant tactical mind, but is more known for his bloody awful poetry.
This, sadly, is a custom that just cannot be. Not only does it not exist, it can't exist - Lt. Stone is a great base figure, but his robot arm is on the wrong side.
A truly enterprising customizer could probably pop the arm out, cut the shoulder off at the top of the bicep, spin it 180° and put it into the other side of the chest, but that's a lot of work. You'd also need a new left arm (though you could just swap the hands from one side to the other).