For the most part, I love this pack. However I have a real problem with one of the character spritesheets that is causing me a headache. In Evil01.png, the second last sprite set, the robot is extremely short walking side to side and then becomes extremely tall walking up or down. It doesn't look like much on the sheet, but if you try to walk around as the robot, it's very glaring and grating. I'd even call it unusable.
*Edit* I just noticed you allow us to edit your works. A simple photoshop stretch did the trick. Happy to know my robot class idea can be salvaged!
Thanks for a beautiful pack!