Board Thread:M.U.G.E.N Help/@comment-14444305-20150701214226/@comment-3495717-20150701214636

That's a hard question to answer due to the varying opinions on 'good'.

Universally...
 * The character needs to be interesting to play as.
 * The character needs to have a solid gameplay style that makes sense and works well.
 * The character (most importantly) needs to be free of glaring bugs and errors.