That looks awesome! He looks much beefier than normal in these pictures but that's kinda what makes it cool :)
I like how you drew his build, and the outfit you've gave him is very fitting. I love the knee guards especially because they look very punk and just opposite of what Pico would probably wear. The sword is really good looking too, reminds me of the Buster sword.
The job variant is also a really cool idea as it makes him look like this half assassin half punk person which is really neat. Overall I love this, keep it up!