Elit is just amazing, I especially love the coloring (that blue is my favorite haha). I suggest you make his eyes a bit brighter, and maybe yellow or cyan instead of red. They are hardly noticeable right now.
I can't help but feel Hunter Desert and Hollow are a bit out of perspective, so if you are planning to use them ingame, make sure to fix that a bit (increase their angle a bit more, it should be 45°). Their heads are okay, but they kind of feel like they're sucked too much into the body, heads should look like they are a bit in front of the body (that's how this perspective works).
Other than that, coloring on Hunter Desert is great, i dig the concept.
Hollow is the worst out of these 3 because this wand it carries makes it look even more out of perspective, the wand should be leaning much to the forward, and here it's like it's leaning back - and the hoodie of Hollow lacks shading. Other than that, i feel everything else is okay.
I hope you can use my comment to fix some things, but great to see more spriters on OTLand