Not bad. The geo is a bit messy but not unworkable. And depending on the style you're going for I would increase the size of the head, especially if you're going for the hulk-look. Though the head is Ok at current size if you're going for the big-dummy look. You can just picture him scratching his head... if he could reach it with size of his muscles. It kinda reminds me of world bench press champions... they're muscles are that massive they walk around in an almost permanent T-pose.
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"Your weapons are no match for ours! People of Mars, surrender!"
"Um, this isn't Mars. This is Earth."
"Earth? Earth-with-nuclear-weapons Earth?"
"Yes."
[long pause] "Friend!!"