Zappy, too.

Hibari does use her butt in combat when she uses the Ninja art Butt go Boom!where grows huge, stomps twice and then does a hip drop with her huge size.

SenranWho2015 said:

Hibari does use her butt in combat when she uses the Ninja art Butt go Boom!where grows huge, stomps twice and then does a hip drop with her huge size.

Her plunge attack is a butt bomb too.