Character Redesigns: Reworking the detailing and Shape Language

As the title of the post says, there are a few designs I'm not actually that pleased with.
I've made a decision to work into them and polish them up before going any further into their model packets or worrying about character paints and story shots.

Here's the first of the three that I feel need a rework before I can take them any further.

I made his design sharper and more muscular to reflect his violent character, which just wasn't coming across in the previous design. I also added more definition to his facial structure to make it easier for modelers to work with as well as changed his chin shaped to better reflect the sort of character he is.