For trivia specifically pertaining to Crybaby, go here.
- Acting for Two: The Italian dub of the 1972 anime had only three voice actors (Massimo Corizza, Renato Montanari and Beatrice Margiotti) voicing all the characters.
- All There in the Script: There are approximately 300 demons in the entirety of the Devilman Franchise, 250 of them have names, most of which are given in concept art and artistic renderings.
- Crossdressing Voices:
- Psycho Jenny is voiced by Yūji Mitsuya in CB Chara Go Nagai World, and by Yasuhiro Takato in Crybaby.
- Satan (Ryo Asuka) is voiced by Tomokazu Seki in the Amon OVA and by Ayumu Murase in Crybaby, though this is a zigzagged example, since Satan is a hermaphrodite.
- Also Ryo Asuka is voiced by Yumi Kakazu in the obscure Mahjong computer game.
- Executive Meddling: The whole series is a positive example. Toei approached Go Nagai about adapting his horror manga Demon Lord Dante into an anime, but wanted a more human-looking main character. Thus Devilman was born.
- Fake American: Nearly all the voice actors in the English dub of Devilman: The Birth and Devilman: The Demon Bird are all, in fact, British people putting on American accents, with Akira and Ryo's dub actors being the very few non-British involved in the dub.
- Fountain of Expies:
- The premise of the manga, that of a loser protagonist in a world inhabited by monsters, who finds himself turned into some unusual kind of hybrid and uses this condition to fight the rest of monsters, often in partnership with some kind of association related to the topic, is still consistently homaged half a century after the manga's release. Works like Urotsukidoji, Nightmare Campus, Parasyte, Tokyo Ghoul, Jujutsu Kaisen and Chainsaw Man all use some variation of it.
- The device of two main characters, one being black-haired and naive and the other white-haired and wiser, ultimately enemy to each other but at the same time intimate in a homoerotic way, was also faithfully reflected by major titles like Neon Genesis Evangelion and Berserk, which eventually became a Fountain of Expies itself each.
- Late Export for You: For several decades, the original manga series had no complete release in English outside of a bilingual Japanese/Engish edition from Kodansha exclusive to Japan. Other attempts at an English release
, such as a localization of Shin Devilman from Glenn Danzig’s Verotik comic book company and an extremely rare translation of the first volume from Go Nagai’s own Dynamic Productions, were aborted partway through. This would change in 2018, when Seven Seas Entertainment finally released the complete manga series in English to capitalize on DEVILMAN crybaby’s release.- U.S. fans of the '70s TV anime had to make do with poorly done fansubs until the series finally got a DVD release from Discotek Media in 2014.
- Latin American fans had wait until the Cyborg 009 vs Devilman OVAs to see anything animated about Devilman, and also they had to wait until DEVILMAN crybaby to hear the same thing dubbed in Spanish. Likewise, the 1987's The Birth OVAs were released in the same region... in 2022. The manga itself finally got a Latin American Spanish translation at 2023.
- Magnum Opus Dissonance: Reportedly, Nagai was quite surprised that Mazinger Z, whose anime was running at the same time as Devilman, became way more popular, because he only created Mazinger to blow off steam and wasn't taking it super seriously, while Devilman was an ambitious story that he worked very hard on. This ended up being a Downplayed example, however, since the Devilman anime still did very well in the ratings throughout its run, and the manga would go on to become highly influential in its own right and today is considered one of Nagai's best works.
- The Other Darrin:
- Rihoko Yoshida played Miki in the pilot film for the 1972 anime. Sumie Sakai, an actress primarily known for live-action work, won the role for the series, however.
- In the Latin American Spanish dub of The Birth OVAs, as a result of being both a different continuity and also being streamed by a different company, the whole cast is different from the dub of DEVILMAN crybaby.
- Pop-Culture Urban Legends: There was once a misconception that Katsuhiro Otomo wrote a chapter for the Neo Devilman anthology manga.
- What Could Have Been:
- Go Nagai revealed he didn't have a particular plan on what to do with Ryo when making the manga, so much that he didn't even remembered him until later in the series. He originally intended to have Ryo dying at Akira's hands while Akira survived before changing and expanding his role into the Big Bad as Satan.
- Similarly, the producers of the 1972 anime were interested in introducing Ryo Asuka at some point, but they never found the chance to work him into the series's plot before it ended. Considering how different the anime was in terms history and characters, one cannot help but wonder how would they have used Ryo, in many ways the most important character of the manga, in this new setting.
- Ryo was also going to have brown hair (Albeit, lighter than Akira's dark brown hair).
- As explained in Gekiman, Go Nagai went through a number of different ideas when designing Sirene: since Toei wanted a her to be a bird demon, he started by putting a pair of wings on her back, but then decided that just made her look like an angel, so he tried spicing it up by giving her talons and a bird head, but felt that that a demon with the name "Sirene" should be beautiful, so he started moving the wings around (including one where they replaced her legs) until placing them on her head. And the rest is history.
- The demon who would become known as God in the anime was originally planned to be the fourth demon general after Lacock, but the cancellation of the series lead to him being made into the final Monster of the Week.
- The manga was originally supposed to end with the Angels coming down to earth and Satan willingly turning himself over to answer for his crimes. However, due to time constraints, it ended right after Satan mourned the loss of Akira. Go Nagai considered this a good move in hindsight because it kept the final ending open.
- According to the Gekiman! manga, the mob who killed Miki were also going to gang-rape her. That was until one of Go Nagai's editors talked him out of it, saying that it would make her fate much darker than it already was.
- Umanosuke Iida, director and writer of The Birth and Demon Bird had hoped to release a third OVA based off the final arc but budget constraints prevented his version from coming to fruition. His version instead became an audio drama (similar to what happened to Shin Cutey Honey's final episode) while the eventual Amon OVA that did adapt that arc was made without any involvement from him.
- The original manga ends up being included in Super Robot Wars debuting in DD, which is a surprise to many because you would expect Devilman to appear in a Shonen crossover (he did once), not a giant robot crossover. Then again, considering how influential Go Nagai and his main mecha show that has been a stalwart to the series are, Devilman gets a special passAlthough . Amongst many voice actors that voiced Devilman in the past, Show Hayami is the one providing his voice there.
