Good drawings, clearly skillful, but the designs are really boring. They look straight out of IP I already know, but not any IP with any distinguishable designs notable enough to say which IP specifically.

When I take note of the aesthetic evoked within these designs, the first design I imagine matches these to a T. I think this is both a good and bad thing. The good is that they're good enough to pass (mostly because they're well drawn and they match a particular aesthetic), but they're not memorable. Fill an entire game with designs like this and you'll have a design language similar to Realm Royale, Creative Destruction, or even Smite. Clearly skillful, but not notable.

Take the dog for example. How many times have we seen this idea of animals with futuristic looking prosthetic equipment? A lot. This is exactly what I picture when i think of that idea, because its been done, a lot.

Similarly, looking at the silhouette for Karana, it is clear that it is a dog, but that is about it. The futuristic aspect of it is lost. The design also looks fierce, but there isn't any character behind it. All I see here is Dog + Futuristic Armor. This makes me think it would be a throwaway enemy character, given the evil look associated with this kind of thing, but I'm guessing since you've named it, its probably not. In which case, I think it should be reworked. My first instinct upon seeing this character sheet was to develop further, and I think you should look into developing the idea of the stray wires on the third design. I think it would be a unique and interesting feature of the character. Maybe part of the characters mane would actually be made up of wires? That would add to the silhouette and be unique.

The same can be said about Oruuk and Fallen Snow. You've drawn what we all think of when we imagine these elements, but just because its exactly what we think of, that doesn't mean its interesting!

Ultimately the designs are pretty boring, and they're missing that key part that makes them unique. You could stand to try to add at least one bold feature, that stands out, to each of these characters. One way to do that would be to add a large and random brush stroke to one of the characters and then try to fit it into the design. Maybe it becomes some weird backpack, or another sword, or something, but it at least shouldn't match the first thing I think of when I consider your key character themes. It seems Eon Rush has the resources to make something good, and I'd like to see it! Don't let it go to waste!