Uran from Tetsuwan Atom series

[Gors]

I know you hellbent on making Zoran a playable character, but as I said before, you're more than biting more than you can chew. If you have no fucking idea of what jaggies are, then I can assure you 100% that you will fail in this sprite (because dealing with jaggies should be the very first problem you need to deal with).

Now I might be sounding rude, but we are humans like anyone else in here and there will come a time where we'll lose patience to guide you. Like now. We've been telling you for two whole pages to be more self critic, to be aware of the problems. We can help you in some steps, but we also won't baby step you every single hurdle you face across (funnily, it is also the first hurdle you're facing now)

Jaggies are when a line is not straight or smooth, it depends on the type of line you want to achieve. In pencil drawing terms, it would be the same as having an unsteady hand and drawing a ball with wobbly lines, or trying to draw a strait line without a ruler. In pixel art, making smooth curves are a lot more tricky due to the square nature of the pixels. This made the artists develop techniques in order to minimize them and make them as smooth as possible. One of them is to create curves in an exponential fashion, that is, making a line with 5 pixel width, then 3, 2, 1, then going back to 5. Notice that 4 in this example, is omitted to avoid linearity, and the values go from bigger to smaller, then back to bigger to create the other side of the curve.

I have no other suggestion than to look up for pixel tutorials. We already helped you a lot, but if you need more info on the subject, don't be afraid to google it. The Internet is full of pixel art tutorials, study about them instead of halting and asking "lol what now".