Naming in Kamen Rider #4

After a nice little break, I'm back and with the 4th installment of "Naming in Kamen Rider" (insert cavernous echo). Zanki (斬鬼) meaning "Sword wielding Demon" or "Cutting Sword Demon". He is an oni that retires in the series and passes on his legacy to Todoroki.

Near the beginning of the series we hear of an injury that hospitalizes one of the oni, this of course is Zanki. Once he's released from the hospital he tries to continue his duties as an Oni, however his body can no longer handle the rigorous punishment and feels he'd be a liability if he countiued to fight as an Oni, he passes his apprentice to full Oni status and instead of taking his name, his apprentice takes the name Todoroki instead.

And now for the pun.. If you add two different radicals for "heart" to Zanki's name you get (慙愧) which means "feeling Shame". It's visible in just about every action Zanki makes on screen that he feels shame for being unable to continue as a proper Oni.