Pixelman is an sprite editor which will work directly on your Nintendo DS!

Changes:

*Went from b to c because of a 2 small bugs. One where you could select a blank space when loading a file when there were less than 10 files in a directory. The other had to do with sprites being loaded incorrectly when both /r and /n were at the end of each line.

http://forum.palib.info/index.php?topic=5230.0