Boss: Giggling Man and Dabrad
Giggling Man's Info:
Attacks: Protection, N-Barrier Touch, Poison, Power Up Plus
Attacks: Mighty Blow, High Dark Blow, Taunt
Start off by Powering up Atsuma, then have the others attack the laughing man and his monster if they can. On the second turn use Atsuma's EX attack and have the others use their strongest attacks (have them throughout the whole battle.) By doing this, they should both be dead. At the end you should be able to use Atsuma's EX attack again and that should finish off the fight.