I've found Naruto and Sasuke but the author didn't make more than those.
Youkai is working in a Gaara WIP.
BTW I know of a good non-chibi Itachi char I've seen in a Naruto game. I may upload it soon.
And dragonball characthers that doesn't look too pixelated in hi-res would be cool too!
Try Choujin chars. There's also a good Goku HiRes in the DB.