Beat Jumper

Picture
In Chapter 34 of the manga and in Episode 91 of the anime, when Nagihiko is reminded of how much he liked baskbetball when he was younger while fighting an X-Characters, he triggers the birth of Rhythm and they undergo a Character Transformation, becoming "Beat Jumper".

Abilities:
 Their special attacks are "Beat Dunk" and "Blaze Shoot".