One rule forbids Yachiru from pretending Kenpachi is her bankai. Canon eventually reveals that it's the other way around- Yachiru is Kenpachi's zanpakuto spirit.
Memetic Badass: Hanataro is the center of rumors such as him being the Soul King in disguise and that his shunpo is so dangerous that Yamato forbid him from doing it again.
Moment of Awesome: Kenpachi, Yachiru, Ikkaku, and Yumichika become the Four Horsemen of the Apocalypse with horse-like hollows and invade Las Noches.
While Seireitei cannot condone your methods, I feel that it must be said: When the four of you leapt out of that Senkaimon on horseback, waving your Zanpakuto overhead, with the entirety of the Eleventh Division on your heels, all letting out battle cries the likes of which have not been heard since the dawn of time, we feel quite certain Aizen shat himself. On behalf of all Soul Society, I thank you.
Replacement Scrappy: In-universe. To say that Momo was... displeased when Shinji retook his post as Captain of the Fifth Division would be an understatement.