User blog comment:BMHKain/What could be great for The Blue Bomber's 10 best abilities against Quote (Cave Story)?/@comment-24281142-20150108213143

Easier thing to do: Use the weapons he gets in Smash Bros. Whether you want to bring in the customs or not is up to you, but I don't think anyone's really gonna complain if you do.

Allow me to help you out: http://supersmashbros.wikia.com/wiki/Mega_Man_%28SSBWU/3DS%29#Moveset