Interesting approach. I love the barracuda head and value sketch approach.
I prefer the torso proportions in either the bottom-left or bottom-middle, where they make him feel bold and overwhelming. I feel the head should be smaller though, if you go this route.
Not sure if I like these weapons. The lightning sword idea is neat. Maybe you can play around with other weapon types formed by lightning, similar to these dual swords. Can't wait to see where you take this character. ^^