Cyborg 009 vs. Devilman is a 3-episode OVA Crossover between Cyborg 009 and Devilman. The OVA was a joint production between Ishinomori Productions and Dynamic Productions and saw the return of director Jun Kawagoe, who had previously worked on the 2001 Cyborg 009 anime.
The OVA takes place right before the Final Battle against Black Ghost in Cyborg 009 and final arc of Devilman.
The 00 cyborgs and the Devilman cast crossing paths as a Black Ghost scientist by the name of Dr. Adams releases his "High-Teen Number" cyborgs as a threat, along with the appearance of mysterious demons in Tokyo.
This anime provides examples of:
- All There in the Manual: The soundtrack dubs Seth/Atun's final form as "Azazel".
- Always Second Best: Atun's grudge against Amon is due to the fact that he could never establish himself as stronger than Amon. Naturally, he shifts this grudge onto Akira/Devilman who angrily tells him multiple times that he isn't Amon.
- Anti-Villain: 0015 is more or less a Villain In-Name Only. Unlike the other High-Teen Cyborgs, she doesn't show any animosity towards the 00 Cyborgs and doesn't have any real interest in fighting them. Her only concern is doing whatever it takes to save her brother, Seth. When Seth and Atun fuse, she tries to defeat the demon after Atun not only murders Dr. Adams, but reveals that there's barely anything left of her brother in their new existence. After Atun beats her senseless, she rescues Miki, having realized that trying to save Seth had been All for Nothing. She also urges the other High-Teen Cyborgs to stop fighting the 00 Cyborgs, as Dr. Adams death defeats the purpose of continuing the battle and that Atun is now the bigger threat.
- Astral Projection: 0015 uses a projection of herself to communicate with Seth's spirit and convince him to separate from Atun.
- Big Bad Duumvirate: Dr. Adams alliance with the demon Atun drives the plot. Eventually though, Atun kills Adams and begins to share this trope with Seth instead, though insisting that they're one entity.
- Big Bad Wannabe: Dr. Adams fulfills this trope since after he brings back Atun, he is killed off shortly after.
- Bloodier and Gorier: Whenever the Devilman parts of the story kick in, expect this. It contrasts interestingly enough with the 009 parts of the story, which were mostly battles against fellow cyborgs, and therefore not as bloody.
- Broad Strokes: The series features references and Flashbacks to previous events in both series, but the timing is said to be impossible if it occurred in the original canon.
- Curb-Stomp Battle: Azazel thoroughly outclasses everybody. he makes hilariously quick work of the High-Teen Number Cyborgs, even taking out 0016 and 0017 in one hit each. Afterwards, the combined assault of 009 and Devilman does little more than annoy him.
- Damsel in Distress: Miki gets kidnapped by Cyborg 0015 in order to lure out Amon.
- Deal with the Devil:
- Eva Maria Pallares made one with Dr. Adams, allowing him to experiment on her brother, because she believes his research will cure Seth's coma. Dr. Adams neglects to mention to her that allowing a demon into Seth's body will completely overtake his personality.
- Dr. Adams also makes one with Atun, offering up Seth's body for him to possess so he could prove his Cyborg Demon research.
- Delicate and Sickly: Seth/0018 was made sickly and put in a coma by Black Ghost's experiments. His older twin sister, Eva/0015, made a Deal with the Devil with Dr. Adams, who was looking for a test subject to do his demonic-cyborg hybrid experiments on, under the belief that being fused with a demon will cure Seth/0018. It didn't work, instead going horribly right (at least for Dr. Adams).
- Demonic Possession: Invoked by Dr. Adams, who offers up Seth's cyborg body for Atun to possess in order to create a Cyborg Demon.
- Deus Exit Machina: Inverted. The movie makes it a plot point that, were it not for Eva's psychic powers waking him up, Ivan would have slept through the entire thing. Justified for Ryo Asuka, since The Stinger heavily implies that he doesn't know he's Satan until after the events of the crossover.
- Evil Counterpart: The High-Teen Number Cyborgs are ones to the 00 Cyborgs.
- 0014 to 009, both possessing Super-Speed and being the leaders of their respective teams.
- 0016 to both 005 and 004, being The Big Guy and having multiple weapons inside of him and
- 0017 to 006. While 006 can spew fire, 0017 can generate ice.
- 0015 to 003 and 001, with both having Psychic Powers.
- Atun is this to Devilman. They possess nearly identical abilities, although Atun seems to be just a bit stronger than Devilman.
- Evil Is Not a Toy: Dr. Adams is well aware of this, though he at least thinks he can keep Amon under control for long enough so he can prove his Cyborg Demon research. Unsurprisingly, he's wrong.
- Exotic Equipment: Pazuzu's penis is a snake which he uses to ensnare Devilman during their fight.
- Flashback: The beginning of the work retells 009's fight with Apollo and Devilman's battle against Jinmen.
- Greater-Scope Villain: Skull and Van Vogt only make brief appearances in Flashbacks, but they're shown to be the ones who authorized Dr. Adams "Cyborg Demon" research, and thus are responsible for a great deal of the plot.
- Half the Man He Used to Be:
- Devilman finishes off Pazuzu by slicing him in half after tossing him off a cliff.
- 0017 meets his end when Azazel catches his ice and redirects it back at him in the form of a blade, cutting 0017 in half at the waist.
- Hijacked by Ganon: In the end, it may be demonically empowered, but Azazel is still a Black Ghost Army cyborg manufactured by a (former) Black Ghost Army Mad Scientist working on a project the Black Ghost Army authorized before it was apparently destroyed. 009 even says a line that roughly translates as "yeah, it figures" early in the fight.
- Kill It with Fire: Devilman finishes off Atun with a blast of fire breath that completely incinerates the demon.
- Plant Mooks: The cyborgs have to do battle with an army of plant-like demons halfway through the film, which they defeat without too much difficulty.
- Let's You and Him Fight: 009 and Devilman fight each other when they first meet, though they eventually work together to defeat Atun.
- Light Is Not Good: Azazel has an angelic appearance, but it's shown to be just as sinister as Atun.
- Lotus-Eater Machine: Lilith attempts to get the 00 cyborgs to lower their guard by creating illusions of their loved ones, but they manage to see right through them.
- Mad Scientist: As with most other Black Ghost scientists, Dr. Adams values his research above all else.
- Make Way for the New Villains: Atun makes short work of Adams and the High-Teen Number Cyborgs before turning his attention to the 00 Cyborgs and Devilman.
- Nice Job Breaking It, Hero: The Anti-Energy wave sent by 001 and 0015 has the effect of making Seth/Atun go One-Winged Angel.
- Ninja Pirate Zombie Robot: Dr. Adams seeks to create a "Cyborg Demon".
- Out of Focus: The plot largely follows the 00 Cyborgs as they try to uncover the mystery of the High-Teen Cyborgs and how they're aligned with demons. By comparison, Devilman has a surprisingly small role in the OVAs beyond his clashes with 009 and Atun. By extension, both Miki and Ryo have smaller roles, Miki being the Damsel in Distress while Ryo merely just walked in and escorted Miki to safety. It's telling when the opening song is a song relating solely to Cyborg 009.
- Outside-Context Problem: The 00 Cyborgs have spent their lives fighting Black Ghost, robots and other cyborgs, so they're a little blindsided by the existence of demons, which they initially believe to be just another type of cyborg. On the other side of the coin, Akira and Ryo are just as surprised to learn about the Cyborgs.
- Religious and Mythological Theme Naming: Most of the new characters introduced in the OVA are named after Biblical figures. Particularly Adam, Eve, Cain, Abel, and Seth.
- The Stinger: The anime ends with two scenes foreshadowing the final arcs of each show. Ryo does research in his home while Psycho Jenny approaches him, all while 001 says that the demon is coming, cutting to Skull.
- Super-Scream: The first demon Devilman deals with in the OVAs, Pazuzu, can produce a Mighty Roar capable of splintering trees and damaging the surrounding terrain.
- That Man Is Dead: After going One-Winged Angel Seth/Atun declares himself an entirely new being.
- Tomboy and Girly Girl: Miki is the tomboy to Eva's girly girl.
- Would Hurt a Child: 0014 tries to punch 001, a cyborg infant, in the third OVA episode.
- You Have Outlived Your Usefulness: Right after being awakened, Atun states that Dr. Adams has served his purpose before snapping his neck.
- You No Take Candle: When Ryo looks up the profiles of Black Ghost's scientists, they're all written in incredibly broken English.
