Hey, overall I'm impressed =D. You clearly know what you're doing, but are lacking on the small how-tos. I'm posting criticism here, though, since I dislike DA.
Let me start with Gahrone; overall it's a very nice and simplistic character design that effectively conveys his character, but there's a few aspects of the pose that need work. Firstly, everything is from a very "flat" view. None of his body parts are facing towards the viewer; his head is to the side, his feet are to the side, and his arms are little L shapes. Instead of something like:

Consider having parts face directly/slightly towards the viewer, like:

(only drawn better).
Also, this is a good time to learn about aliased/antialiased lines. Consult the following image:
On the top is a zoom in on an aliased line. It's blocky and pixely. The bottom is an antialiased line, which is all smooth and sexy looking. However, if you try to use the fillbucket tool on the smooth, antialiased line, you'll get white pixely stuff along the sides (kind of visible on the dunes in Gahrone's picture).
Also, JPGs. Keep in mind that saving as a JPG blurs the image. If you're going to use the fillbucket to color, ALWAYS make sure you are saving as a BMP, PNG, or other format that has no loss. When you're ready to upload your image to the interwebbings, save-as it as a JPG to reduce its size.
Lastly, he is facing to the left, so his belt buckle and the place where his vest laces should be shifted to the left a bit more than they are.
Anyway, next Zapher. A lot of new artists make this same mistake when drawing pointy teeth. Remember that teeth are BEHIND someone's lips, and are revealed when they open their mouth. Look at my example below; on the left the teeth are shaped to the lips, and on the right they are hidden behind the lips (I drew the hidden parts with dotted line so you can see what I mean).
Other than that, Zapher looks good overall (though watch the aliasing/blurring on the sword; you want to keep those white dots away). Oh, and the "The Shark" is a bit hard to make out against the blue.
Next Dizleia. Digleia? I don't actually remember how to read cursive. Anyway, her main problem is that the feathers are way too straight, like shingles. Have them fan out a bit; look at this:

Note how they all sort of go towards the bird's arm, but none of them are going the exact same direction.
As for her anatomy, don't give her fingers. None of your other characters have fingers, and most the animals they are based off of DO, so it doesn't make sense that the falcon would be the only one with fingers. Her feet could use work too; the one on the right is far too straight and pitchfork-like. And I'd move her breasts to the left a bit, as she's facing to the left but they are relatively close to the middle placement-wise.
Lastly, Shinkick. The lines on him are a bit higher quality than the rest of the pictures; did you use a different program or scale him down after coloring? I can't say I like the white outlines, though that's more of a personal problem I have.
My main tip with Shinkick is to not draw lines signifying his muscles. A lot of new artists try to outline every muscle to make people look strong, but it ends up looking unrealistic. Focus on the overall limb shape to convey muscules; give him broad shoulders, a thicker neck, exaggerated calves and biceps, etc.
So, overall the style is simple, but that works. I HIGHLY encourage you to try working with Flash if you get a chance (it looks like you might've used it for Shinkick, but I can't tell for sure).