- Ear Worm: GET IT OUT OF MY HEAAAAAD!!
- Missing Episode: Only the audio for episode 12's next-episode preview of episode 13 survives. ...Actually, it's kinda surprising that this trope didn't hit the show any harder than this.
- Nightmare Fuel: The demonically possessed katana 'Nihil' corrupts its user. When Dororo picks it up, his Bratty Half-Pint dialogue doesn't change at all, so the audience is briefly entertained with the thought that the only difference between that trope and a mass-murderer is will and means.