If you want 3D Models you can get FREE ones all over the net, then use Sprite Me or Model-2-Sprite to convert them to PNG's with all the angles and motions you want.
http://www.thegamecreators.com/?m=view_product&id=2301
http://www.thegamecreators.com/?m=view_product&id=2302
I have Both of these and Model-2-Sprite worked best for me, What i did was load the 3D Model, then extracted the Views/Animations i wanted and saved them as TGA then used Paint.Net which is free to remove the background colour, Just use Magic Wand. Then save as PNG, the whole thing takes about 2 mins.
You can export as 32x32, 64x64, 128x128 etc and you will get a tiled sheet, by whatever Columns/Rows you select. Then import them into C2. This gives you GREAT LOOKING 3D Sprites in 2D.