(Don't take offense, i'm pretty lighthearted when it comes to criticisms.
)
Your art style is certainly... unique, and i'm not saying that in an insulting manner. It's just that most of the artists around here go for a sort of lighthearted look, and this is anything but that. Your characters don't have the usual sappy smiles and cheery eyes that make up a majority of the fandom, and i like that.
Thorne looks like he wants to punch somebody, and Prowl could probably do with a cup of coffee. I think Devynn works best with your style, in my opinion, but i can't quite place why.
Also, Scourge looks kinda funny; i don't normally imagine savage cannibals wearing bright orange t-shirts!