- Casting Gag: In the 2019 anime Mio sings, though she claims she isn't very good. Her voice actress, Nana Mizuki is actually a very talented and popular singer.
- Follow the Leader: Apparently the series came around to compete with GeGeGe no Kitarō, as Tezuka felt he could write his own horror story featuring yokai.
- The 2019 anime aired alongside the sixth season of Kitaro, though this seems to be mere coincidence as Dororo came about because of its 50 year anniversary while Kitaro has had several different anime over the years.
- Meaningful Name: According to trivia about his childhood, Tezuka's friends couldn't pronounce the Japanese term for thief ('dorobo') correctly. This mispronunciation gave him the name of the series. In the manga, it's highlighted as being a result of 'kiddy-talk.'
- Missing Episode: Only the audio for the 1969 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.
- Role Reprisal: Hiroki Suzuki, the actor who voiced Hyakkimaru in 2019 anime, first portrayed the character in the stage play.
- What Could Have Been: In one alternate planned ending for the series, Hyakkimaru would find himself faced with getting his last part back, but in the worst way possible— Dororo has it, and must kill the child if he wants to retrieve it. However, he can't bring himself to hurt his friend like that. This ending was explored in Blood Will Tell, however.
Trivia / Dororo