testing out my focus areas with the use of a gradient map. ever since working in photo retouching I've learned not to use absolute blacks and whites plus in illustration absolute blacks appear to muddy the colors. So I use the gradient map and a levels layer to affect the black and pay attention to the saturation areas too. I'll be adding the other characters into the image once I get the overall look resolved.Plus using this forum lets me have quick access to my previous images while I work on in my software of choice. (I'm using a laptop).
Yeah I'd always avoid absolute blacks if you can. The main predicament here why you're not getting contrast is because most of your character shape is all darks with just highlights, you're missing a lot of mid tones which is what bridges the gap and makes contrast appear more predominant. I personally prefer the first, the deep dark blues is a nice touch, and it goes well with the orange but that's my feedback on your values!