1. Beat Revenge Mode to unlock EX-Special.
2. Go to special it should say "EX-Special" select it.
3. Set your desired special.
4. Make any match that you want.
5. This take up three specials. Prees "L+R+A+B."
6. Press " A + B" then bam.

Note: This special does more damage then a normal one, so choose wisely.