And yea if you're gonna make boss graphics, it's quite easy. You can make a static sprite, and just make him fire a kazillion of missiles. Plus you'll need to have him have a breathing animation so you can bring him to life.

Plus, making sprites is not any easy task. Most people make sprites, but they are sprites doesn't mean there are pixels. They must be pixel perfect means they have the three aspects below. Lots of amateur artists miss these concepts when they make sprites for bosses, etc if they are gonna do it for jj2.

- Color conserving, using jj2 palette as a limit
- anti-aliasing inside sprite
- selective outlining