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Voiced by: Ryoichi Tanaka (original series & Devilman Lady), Show Hayami (The Birth, The Demon Bird and CB Chara Nagai Go World OAV's), Tomokazu Seki (Shin Cutey Honey), Shin-ichiro Miki (Devilman PSX), Shinji Takeda (Amon: The Apocalypse of Devilman), Kazuya Nakai (CR Devilman Awakening), Shintaro Asanuma (Cyborg 009 vs. Devilman), Bryce Papenbrook (Cyborg 009 vs. Devilman - English dub), Kouki Uchiyama (Crybaby)Our protagonist and hero. Akira was a normal high school boy before being roped into Ryo’s Devil-Fusing scheme, and the resulting fusion of man and demon has turned him into something greater than both: he has the physical capabilities of a demon and the morals of a human being, allowing him to take on the demonic hordes without losing his morality in the process.Before his fusion, he was a meek and soft-spoken young boy. After his transformation, he becomes more aggressive and confrontational, but there are several moments that show him to be the good person that he once was deep down.
- Accidental Pervert: In the second OVA, Akira wakes up from a particularly bad dream. It ended with the image of Miki impaled on a demon's teeth. While Miki checks to see if Akira's alright, Akira bats Miki's nightgown upwards to make sure she's fine. After a bop on the nose and some talk, Akira, demon infused jackass that he is, more or less negs Miki and makes fun of her panties.
- Alas, Poor Yorick: After Miki is dismembered and Akira kills everyone involved, he hugs her head to his chest and sobs in an incredibly tear-jerking scene.
- All Girls Want Bad Boys: At first, Miki seems to like Akira for his more aggressive and Hot-Blooded nature, but it’s soon subverted when Akira begins to push her away as a result of said behaviour.
- And the Adventure Continues: The good ending of the NES game has God's angels appear after he ensures mankind's survival and evolution into demons, showing his fight is far from from over.
- Back from the Dead: Akira is reborn in the second to last chapter of Devilman Lady, resurrected from the fetus created by Satan's halves.
- Badass Biker: Akira in the anime series, taking account the Lighter and Softer adaptation couldn't have Akira dismembering and mauling demons in a gruesome manner to cement his badass status, they just gave him a nice bike to ride in between the fights.
- Berserker Tears: This has happened a few times in multiple adaptations and sometimes continues on after his transformations into Devilman.
- Came Back Wrong: A softer version: Akira is a VERY shy and gentle boy when he starts the manga, but once he gets Amon's powers and becomes Devilman, he becomes WAY more callous and cocky, to the point some people are actually jarred by the change.
- Same deal happens in the Toei anime, only Akira dies only for his body to be possessed by Amon/Devilman.
- Chick Magnet: Once his body merges with Amon. He's significantly more muscular and confident, and girls begin to take note of him. Though it's clear he has eyes for Miki and Jun Fudo.
- Classical Anti-Hero: Before merging with Amon.
- Cowardly Lion: He was one before merging with Amon, as he would try to stand up for people even when he's afraid. It's most apparent in the original manga when he willingly goes into an unopenable hidden chamber with nothing to go on but Ryo's word, and grimly accepts to attempt demonic merging, a process that drove Ryo's father to suicide, though only because it's their only means of survival.
- Cute Little Fangs: Occasionally sports these in human form, particularly in Lighter and Softer fare such as Cyborg 009 VS Devilman and CB Chara Go Nagai World.
- Death by Adaptation: In the original Toei anime, Akira is killed along with his father, and his body is taken over by Devilman.
- Declaration of Protection: Towards Jun Fudou in Devilman Lady.
- Decoy Protagonist: In the AMON manga, he only stars for about half the first volume and later only appears during flashbacks, his body is completely taken over by Amon who stars the series from start to finish, but with a slight twist that in this version he isn't that different from Akira's Devilman persona itself.
- Demonic Possession: In Lady, he is able to possess anyone while he's a ghost.
- Did You Just Punch Out Cthulhu?: This is his goal in Devilman vs. Hades. Should Hades brings Miki back to life, he intends to kill the god anyway.
- Disappears into Light: Akira in human form and Satan do this at the end of Violence Jack. Both falling together as a ball of light that eventually disappears.
- Expy: Of Ryo Utsugi, the protagonist of Mao Dante.
- Fallen Hero: Shin Violence Jack strongly implies that he is the Skull King, the leader of the demons of Skull Castle and wants to destroy Jack/Amon. Jack attempts to make him remember who he is, which causes Akira's face, his true face, to return.
- Fanservice Pack: Fusing with Amon gave Akira a killer human body (and less compunction to cover it up). Makes the average man wishes Amon was real just for that reason.
- Fragile Flower: According to Miki, Akira used to cry so much that his nickname was "The Fire Alarm of Higashi Elementary".
- Guyliner: Side effects from merging with Amon.
- Half-Human Hybrid: Akira is implied to be part angel at the end of Devilman Lady as angels can only reproduce with other angels, and likewise only give birth to angels. Even as humans Jun and Ran's angelic nature means they could only conceive with each other.
- Half the Man He Used to Be: How he dies in the manga.
- Heroic Build: Develops one after fusing with Amon. He gain considerable amount of muscle.
- Hot-Blooded: Not originally, but becoming Devilman made him far more aggressive and confrontational.
- It's Personal: He really hates Jinmen. Jinmen has eaten people he cares about in different adaptations. As such Akira would rip him limb-from limb. It's so personal, he kills Jinmen yet again in Hell and makes sure he suffers.
- Jerk with a Heart of Gold: After merging with Amon, Akira becomes brash, arrogant and confrontational. But he still has a soft spot for Miki and his adoptive family, loyalty to Ryo and a belief that human life is worth fighting for.
- Last of His Kind: By the time he dies, Akira is the last human in existence.
- Love at First Sight:
- It's complicated. Shin Devilman shows that upon meeting Ryo for the first time Akira felt soothed by Ryo's appearance. Only after the memories implanted by Psycho Jenny kick in does he believe it's because they are childhood friends.
- Another interpretation is why Akira is in love with Jun Fudo in Devilman Lady after she falls in Hell.
- Loves My Alter Ego: As he doesn't know it until the end of Devilman Lady, Jun is the female half of Satan.
- Masculine Girl, Feminine Boy: A downplayed example, but he was originally the feminine boy to Miki's masculine girl. Fusing with Amon decidedly changed this.
- Mental Time Travel: As a ghost, he is able to do this, but he can't dig deeper into someone's memories.
- My Greatest Failure: How he feels about Sachiko and Miki's deaths, with the latter leaving a huge impact all the way to Devilman Lady. Tellingly, his intention to help Jun really sticks out because she was the first person he cared about and loved after the universe rebooted.
- Nice Guy: Akira keeps his kind heart even after being possessed by Amon.
- No Place for Me There: He chooses to reside in Hell after the events of Devilman and not Heaven. Hell might be a terrible Social Darwinist prison of pointless torture, but he sees Heaven as a prison basked in light filled with obedient slaves of God and that such a place lacks the justice he sought.
- Nominal Hero: Starts out as one in Devilman vs Hades where he only cares about reviving Miki. When he ends up reviving the dead across earth and creating a second hell where people as animals rape, eat, and kill each other. Making a land where the strong pick on the weak. Only by interacting with Barakarasu and Philomela does he start to soften enough that he decides to try to take and then use Hades power to revive humanity properly.
- Oblivious to Love: Akira is completely unaware that Ryo is gay (to the point that Ryo's indirect confession of being so in Shin Devilman flies way over his head), much less that he's in love with him.
- Parental Abandonment: Akira lives with the Makimura family full-time. In some versions of the story, his family perished in an incident.
- Reincarnation: In Violence Jack, he is reincarnated as the big man himself. After disappearing with Satan near the end, however, Amon takes over as Violence Jack and continues fighting to protect humanity in Akira's stead in Shin Violence Jack.
- Rescue Romance: He's the rescuer in this sense after saving Jun Fudo numerous times as the latter falls for him.
- Restraining Bolt: In Grimore. While Amon has full control of Akira, Akira has enough influence over Amon to keep him from laying so much as a claw on Miki's head no matter how hungry and tempted Amon gets.
- Revenge Before Reason: Ryo offers peace between demonkind and devilmen when Akira approaches him. Akira, unwilling to accept it despite it meaning his devilmen followers survival, wastes time contemplating what to fight for as justification against Satan until he remembers Miki. Once she dies partly cause of his own inaction, Akira chooses to let humanity kill themselves while he leads the devilmen into a pointless war against Satan for revenge, getting them all killed.
- Roaring Rampage of Revenge: Does this to the torturers responsible for the deaths of Mr. and Mrs. Makimura, as well as the lynch mob that murdered Miki, Tare and Masa. In Devilman vs Hades, it's revealed that afterwards, he extended this to wiping out mankind, not even bothering to wait for either humans to wipe each other out or be destroyed by Satan and his demons. Even Persephone and the other gods of Hades are shocked to hear this.
- School Uniforms Are the New Black: Rarely seen out of it.
- Second Love: In Devilman Lady, He falls in love with Jun Fudo (not related) when she appeared in Hell in which he does have sex with her. He then makes it his goal to protect her. Sadly it doesn't go anywhere as she is literally the second half of Satan.
- Shrinking Violet: Akira was originally very timid and non-confrontational before becoming Devilman.
- Star-Crossed Lovers: Twice no less. Miki is murdered and Jun is the Literal Split Personality of Satan/Ryo.
- Tall, Dark, and Handsome: He's a wimpy nobody at first, but once he merges with Amon he stands taller and leaner, with wild hair, intense eyes and an impressive physique. This doesn't go unnoticed.
- Their First Time: In Lady, this applies with him and Jun, and it's more consensual than what the latter goes through. Keep in mind that this is the original Akira, as he never (and ever will) had a Relationship Upgrade with Miki.
- Thou Shalt Not Kill: Played with. Akira has no problem killing other demons, but he draws the line at killing humans and other Devilmen. He breaks this rule after seeing Miki's corpse.
- Took a Level in Badass: After merging with Amon. Even outside of his Devilman form, he's far stronger, faster and more confident than any normal human.
- Took a Level in Jerkass: Amon's influence causes Akira to become more aggressive and callous over time, but he still remains centered enough in his morality that while he's no longer a straight up Nice Guy he's a Jerk with a Heart of Gold at worst. Unfortunately he takes an even bigger level in jerkass after Miki is murdered; and various spin-offs show the extreme toll this takes on his sanity.
- Took a Level in Kindness: Akira shows a surprising amount of kindness in Devilman Lady showing a very caring and supportive attitude towards Jun. He saves his aggression towards his enemies. Especially Jinmen.
- Was It All a Lie?: Part of Akira's reason for opposing Satan near the end of the manga was his belief everything him and Ryo did was a lie and that he was only being used by Satan. Only when Satan cries for him does Akira realize otherwise.
- Why Can't I Hate You?: Played with. Despite hating that Ryo took so much from him and caused him so much pain, he reveals in Devilman Lady he still cares about Ryo.
- Neo Devilman reveals that he did hate Ryo/Satan for wiping humankind and killing his friends and adoptive family; but after he died and saw Ryo's crying face, Akira realized that there was some good in him after all.
- Woobie, Destroyer of Worlds: Becomes this after Miki's brutal death, leading him to wage a mutually destructive war against Satan and his demons. Devilman vs Hades takes it up to eleven by revealing that it was Akira, rather than the demons or humans themselves, who wiped out humanity after Miki's death.
The alter ego of Akira, and the half-demon half-human protector of mankind. Akira transforms into this whenever he needs to fight and does so by violently morphing into a goat/bird-legged batlike creature.Allegedly (and later confirmed in side material) he looks startingly like Amon, one of the most powerful demons known to demonkind. This is because the demon that possessed Akira at the start of the series is none other than Amon himself.
- Adaptation Dye-Job: Played with. In other media such as the 1972 anime and Cyborg 009 vs. Devilman, he's green. In the Amon OVA, he's gray while Amon himself is red. The original manga mixes the above image and green skin.
- Anti-Hero: In every iteration of his character, he's not exactly heroic, but not even villainous either. In the anime, while he's a Jerkass, he does try to save people, but in every other incarnation, he wants to have a good fight which would end his opponents. He loses this trait in the later parts of the manga and Devilman Lady.
- The Berserker: How he fights. If you make an enemy out of him, expect your corpse to be anything but intact.
- Blood Knight: He just loves a good fight, and said lust for battle bleeds over into his Akira personality.
- Combo Platter Powers: Of the Lovecraftian Superpower variety. Devilman can:
- Flight: Spontaneously grow wings to fly with.
- Healing Factor: He certainly has this, but it's typically not instant. In one amusing instance Ryo simply puts his severed arm on the stump and his body does the rest. Getting cut in half at the waist does seem to be a limit to what his regeneration can handle.
- Intangible Man: Phase through solid objects. Being able to pass through steel is a high end demon power.
- Playing with Fire: Fire a "Devil Beam" which, in the manga, is more like heat generation. Both versions are a Hand Blast.
- Pure Energy: He can also fire a "Devil Arrow" from his antennae.
- Powers via Possession: How Akira got his powers, but in an interesting way.
- Psychic Powers: Use Telepathy, Psychic Radar (limited to violence). Both of these powers are rather weak in him, as he's more action oriented.
- Shapeshifting: Transform at will, though this is limited to his Devilman and human forms, though versions in between are also common. Devilman is also a Size Shifter; his full height is somewhere along the lines of 3-5 meters in height.
- Super Strength: Tear apart demons with his bare hands.
- Super Toughness: Survive injuries that would kill a normal human ten times over. Except getting split in half at the torso...
- Teleportation: This is how demons possess other beings and things, by effectively telefragging into them.
- Demonic Possession: Inverted in the manga, where Devilman is essentially the result of a human possessing a demon, but played straight in the anime and Grimoire, where Amon's possession of Akira killed his original personality.
- Full-Frontal Assault: In the original manga Akira does not wear any clothing while in his Devilman form, as his transformations destroy his clothing.
- Fusion Dance: Just like normal demons Devilman can still fuse with other things, but he typically avoids this.
- Good Is Not Soft: As the demons he happily rips apart can testify.
- Has a Type: Strong willed and determined girls who resemble Miki. Nike, Silene, and Miki all have some resemblance to each other.
- Horrifying Hero: Anyone who sees him is instantly horrified. This turns against him in the manga and Crybaby in which multiple people find him horrific and the same as a normal demon, and he becomes hunted as a result.
- Jerk with a Heart of Gold: At his most heroic, Amon isn't too bad of a guy. Such as in the Toei Animation anime and Grimoire.
- Love Redeems: In the Toei anime, he fully intended to destroy humanity as planned once he took over Akira's body. However seeing Miki changed all that, and he becomes branded as a traitor by nearly every demon.
- No Name Given: In the Toei anime, he is simply "Devilman". In the manga and other adaptations, it's Amon.
- One-Man Army: He is capable of slaughtering demons by the hundreds. Bes demonstrated during the Black Sabbath where he kills every demon possessing humans]].
- The Power of Love: Amon felt genuine love for the demon Nike and it even managed to overwhelm Akira in Shin Devilman. Likewise his falling in love with Miki in the 1970s anime and Grimoire bring out the best in Amon.
- Shapeshifting Excludes Clothing: In most adaptations Akira is completely naked when he returns to his human form, as his transformation into Devilman destroys his clothing. Averted in Devilman Crybaby and the 1972 anime, where he has Magic Pants in both.
- Slasher Smile: He possesses a grin that looks to be one. Later dropped this late in the manga and in Devilman Lady.
- Small Name, Big Ego: Akira likes to believe that the demon Amon rivals Satan. Not only is it not true as each time Satan attacked him Akira is always defeated in a Curb-Stomp Battle, but the one time it didn't happen in the final battle of Violence Jack was precisely because Satan refused to attack him.
- Spared by the Adaptation:
- He survives with Miki in the Toei anime, fully embracing his identity as Akira.
- Survives completely in the NES game, which is a faithful adaptation of the manga.
- Super-Powered Evil Side: Depending on adaptations, he is either Chaotic Evil or Neutral Evil, but hates Akira. In others such as Devilman Lady, they become the same person, since not a hint of Amon's old personality was in that series.
- Walking Shirtless Scene: Akira rips his shirt (and sometimes his pants), whenever he transforms.
- Whip It Good: In the Toei anime, he uses his belt as a makeshift whip.
Voiced by: Yuu Mizushima (The Birth, The Demon Bird and CB Chara Nagai Go World OAV's), Toru Furusawa (Devilman PSX), Tomokazu Seki (Amon: The Apocalypse of Devilman), Masakazu Morita (CR Devilman Awakening), Satoshi Hino (Cyborg 009 vs. Devilman), Christopher Corey Smith (Cyborg 009 vs. Devilman - English dub), Ayumu Murase (Crybaby)Akira's best friend, who is the one responsible for him becoming Devilman. He's very loose on morals and believes in extreme methods in order to wipe the demons. Ryo is also very possessive and territorial towards Akira and dismissive of everyone else.
- Above Good and Evil: Ryo's attitude, given his disregard for law and individual human life. Potentially justifiable, considering all of humankind is at stake. Makes plenty of sense in hindsight, once it's revealed he has been Satan all along and then subverted when it's shown is actually a very empathetic person who happens to have faults like any other person.
- Adaptational Attractiveness:
- He's not particularly Bishounen in the original manga (before transforming into Satan, at least), but becomes more so in the OVAs. AMON turns his prettiness Up to Eleven, especially in Satan form.
- In the original manga Akira asks a fellow Devilman if Satan is as beautiful as an angel, having realized in his conversation with Ryo that he was Satan. Though Ryo look more Hunk like in the manga compared to later adaptations making him prettier to go with this statement.
- Adapted Out: Ryo was left out of the original anime, though the developers later stated that they would have liked to have included him at some point. He was in the OVAs, playing the same role he did in the manga, but was left out of Devilman Grimoire. The character Himura, who appears in both the anime and Grimoire, resembles him, however.
- Anti-Hero: While Akira can be more virtuous and leave a demon alone if it backs down and becomes non-hostile, Ryo shows no such compulsions and uses everything in his power to destroy them.]]
- Badass Longcoat: And it's pretty damn well animated in the OVAs.
- Because You Were Nice to Me: Ryo is apathetic — and at times even condescending — towards other humans, with the exception of Akira because Akira was the only one who reached out to him and befriended him. Tiana, the native american girl he befriended in Shin, was one of the few others he eventually came to care about.
- Berserk Button: Don't hurt Akira in front of him. Hell, in his introductory scene, he pulls a rifle at the Dosu Roku gang who were picking on Akira!
- Big Bad Friend: To Akira once he discovers his real identity.
- But Not Too Foreign: Ryo has a Japanese father and a white mother.
- Characterization Marches On: At first, he's shown to be very loose on morals and very violent and sadistic, but mellows out in later volumes. Fridge Logic if you consider that Ryo is an amnesiac Satan, so he lacked in human morals, social skills and common sense during the first volume.
- Expanded upon on other manga/side stories. Ryo is shown to be shy when he was young in Devilman Saga and towards Tiana in Shin Devilman. It is also revealed that Ryo can't bring himself kill animals even to survive in the wilderness.
- Devilman Saga reveals that Yuuki Fudou and Ryo Ouji Asuka got along well because they both are pacifists. Ryo seeks power despite hating war is to maintain peace.
- Coincidence Magnet: Ryo is terrified that all of the cynical predictions he makes keep coming true. It turns out that none of these are coincidences. These predictions are likely just fragments of Satan's commands to his demon army.
- Crazy Jealous Guy: He does NOT like the idea of Miki hanging around Akira and treats her with contempt. The AMON manga takes it Up to Eleven, making it so Ryo/Satan choose to broadcast the video about the devilmen and betraying Akira in the process: he realized that Miki was more important in Akira's life than him. When Dosu-Roku finds out, he calls Satan out for this, saying that he basically doomed humankind for an insanely petty reason.Ryo: The only one who saves Akira will be me... and me alone!
- Death by Adaptation: Implied at the NES game as the Final Boss. His defeat means Akira can live with Miki at the end of the game.
- Despair Event Horizon: Ryo gradually goes from viewing Akira as the savior of humankind to viewing the fight against the demons to be a pointless and futile one.
- Also has a big one when he suddenly realizes that he's not actually Ryo Asuka.
- Dude Looks Like a Lady: See Adaptational Attractiveness above, but as shown after he transforms into Satan, Ryo has very androgynous features and becomes more so in later adaptations. Also, in Devilman Saga, he was bullied as a child for his girly features. This is toned down somewhat in Crybaby, where he looks a lot more masculine. Upon becoming Satan once more, he immediately reverts back this trope however, making it a subversion.
- Entitled to Have You: He has shades of this when it comes to Akira.
- Flanderization: He was perfectly capable of strategizing and even being a dead serious, outright scary person in the original story, but some adaptations tend to focus almost entirely on his one-sided Mad Love for Akira.
- Foil: To Akira, in several ways, both abstractly and aesthetically. Most apparently, Ryo is a pale man with blonde hair and light eyes, usually dressing in bright or white colors, while Akira is a typical Japanese boy with black or brown hair and eyes, favoring his black school uniform for clothing. It's also consistent that Ryo typically keeps a cool head and doesn't bother with laws and morals, while Akira used to be prone to panic and despair, and later becomes outwardly aggressive, but always strives to stay on the side of good. Ryo is coldly practical, always considering long term and grand scheme solutions, but Akira is often unable to accept sacrifices for the greater good when it comes to innocent life and can't sit idly by when someone is in need.
- Before Akira merged with Amon: Akira was timid, gentle and plain, while Ryo was a charismatic, confident, wealthy young man, unafraid of getting his hands dirty or breaking the rules.
- After Akira merged with Amon: Akira becomes brasher and wilder in appearance and behavior, but Ryo remains clean cut and refined, and takes a methodical approach in all endeavors.
- Akira as Devilman: Akira uses his powers to tear demons limb from limb, while Ryo stays human and acts as his strategist and manager. Ryo falls deeper into cold pragmatism while Akira struggles to hold onto his humanity. When Ryo takes his true form as Satan, he is beautiful and serene, contrasting Devilman's fearsome appearance. Satan fights to destroy humanity and make a world for demons and Akira, while Akira continues to fight demonkind and resist Ryo's offers of eternal companionship. Whereas Satan's Pride keeps him from stopping despite moments where he questions his actions until it's too late, Akira acts solely on his emotions as they both refuse to back down and doom the world.
- Friend to All Living Things: Ryo is compassionate to all animals on earth. Satan likewise wanted to protect them as much as he does demonkind.
- The Heavy: Albeit not a villainous example; Ryo is the entire reason that Akira became Devilman in the manga. Ryo's true self turns out to be a more traditional heavy as well.
- Heterosexual Life-Partners: Ryo's relationship with Akira is very emotionally intense, particularly in the first volume in the manga. The heterosexual part is ultimately subverted, at least on Ryo's side.
- Hollywood Genetics: It's very unlikely for a half-Japanese person to have natural blonde hair and blue eyes. While one might think this is due to actually being Satan, the original Ryo Asuka also had this coloring.
- If It's You, It's Okay/Single-Target Sexuality: Ryo's only ever had eyes for Akira, but by human standards he wouldn't be exactly gay, since his true form is a supernatural Hermaphrodite angel. That being said, Akira's the only human he truly cares about, despite his true form Satan hating humanity as a whole.
- Ignored Epiphany: Played with. Despite knowing nothing awaits but death if the demons and devilmen face each other, Ryo accepts that fighting is inevitable because of how well he knows Akira. So he fights in a final battle with resigned acceptance.
- Incompatible Orientation:
- He has feelings for Akira and is violently protective of him. Except Akira cares for Ryo, but he leans more towards Miki than to him. He finally gets to confess his feelings for him (actually Yuuki Fudou, Akira's current incarnation) in Devilman Saga. Goes as well as expected. Zigzagged in Devilman Lady, where Akira does have a relationship with Jun Fudou, one of Satan's halves and a split part of Ryou himself; he falls for her hard enough to vow to protect Jun for the rest of his life once he reincarnates.
- By the end of Devilman Lady Ryo's relationship with Akira has grown into every potential relationship possible. A best friend, an enemy, a lover (Jun Fudou), a mother (also Jun Fudou), and father (Ran Asuka). To say their connection to each other is complicated is putting it mildly.
- Despite being the cause of their self-destruction, Ryo ends up showing more sorrow over mankind's extinction than Akira.
- In a roundabout way, Akira falls in love with Jun Fudo, who is the other half of Satan/Ryo.
- Late-Arrival Spoiler: Sequels and spinoffs not only don't hide his plotting nature and obsession with Akira, they greatly exaggerate it.
- Mixed Ancestry: When examining his family pictures, Akira notes that Ryo's mother is foreign; Ryo is half Japanese on his father's side and half white on his mothers. The real Ryo Asuka is presumably mixed race, but he died before the manga and Satan took his place. Satan's ethnicity is explicitly alien.
- Muggle Best Friend: Ryo intended for both himself and Akira to be possessed by demons, but somehow escaped this fate. Later in the series this makes him feel helpless and he starts to look for a method to become a devilman himself. He eventually gains the power of a demon- in fact, one of the most powerful demons of them all, because he’s Satan himself.
- Murder the Hypotenuse: In the AMON manga, Ryo wants to be Akira's most important person so badly that he's willing to kill Miki just so she can't. No matter how directly or indirectly, he is ultimately responsible. He plans this in Go Nagai Chara World as well, but the situation never plays out like he wants.
- Official Couple: Enters a intinmate and happy relationhip with Miki in Violence Jack. That is ultimately part of his goal to punish himself for killing Akira, and ends with both of them dying helping Violence Jack against Satan's darkside, Slum King.
- Parental Abandonment: His mother died with he was a child, and his father died shortly before the beginning of the manga.
- Phenotype Stereotype: He's part white, so of course he's blond and blue-eyed. Until it's revealed the real Ryo Asuka looks nothing like him.
- Posthumous Character: the real Ryo Asuka died in a car crash long before the manga even began.
- Pragmatic Hero: Bordering on an Unscrupulous Hero. He has good intentions, but isn't above doing questionable or heinous things to achieve them.
- Sanity Slippage: Ryo's actions during most of the original manga were him suffering a breakdown after the death of his pet dog and father as well as learning about the existence of demons, with Akira noticing a considerable change in him. His unhinged and apathetic attitude partly caused by alcohol and drugs to help keep his sanity. Shin Devilman, especially the story about him and Akira residing with the Native Americans in the 1800s, features the much kinder person he was before he learned about demons. It was precisely because he went mad trying to cope with his fear and paranoia concerning devilkind that Satan was able to understand the weaknesses of humanity.
- Yandere: The adaptations cracked this Upto Eleven as he ended up being responsible for Miki's death explicitly because of his violent, possessive feelings over Akira while he's more stable in the manga (see above).
Voiced by: Sumi Sakamoto (original series), Jun Konomaki (The Birth, The Demon Bird and CB Chara Nagai Go World OAV's), Miho Yamada (Devilman PSX), Atsuko Enomoto (Amon: The Apocalypse of Devilman), Ai Nonaka (CR Devilman Awakening), Saori Hayami (Cyborg 009 vs. Devilman), Megumi Han (Crybaby)Our protagonist's Love Interest, and an all-around sweethearted girl.
- Action Girl: She can be one, and it borders on being a Sukeban. Most of the time, she's downgraded to more of a neutral female. In contrast Miko becomes a bit of a demon hunter in the third OVA and is something of a right-hand-lady to Akira.
- Miki is also this in Devilman Grimoire, where she is shown punching out Himura after he and Dosu Roku's gang accost her and Akira. Afterwards she brags about it while having dinner with Akira and her family. And now, after 40 years, Miki has finally become a Devilman herself.
- All Girls Want Bad Boys: Averted or downplayed in most adaptations, but played completely straight in the manga. She's originally tough, bossy and somewhat meanspirited, picking on Akira for his cowardice and sensitivity. Once he merges with Amon, she openly admits to finding him arousing, volunteering to carry his bags, cheering on his schoolyard brawls and fantasizing about him in the shower. She even downplays her tomboyishness to appeal to Akira, feigning fright and weakness for Akira's attention, something even her little brother picks up on.
- All Girls Want Bad Boys/Women Prefer Strong Men: Miki takes a greater liking to Akira when he becomes a buffed-up badass.
- Alliterative Name: 'M'iki 'M'akimura.
- An Arm and a Leg: It wasn't enough that someone had to tear open her backside with a trench knife, her attackers completely cut her to pieces and burned the pieces of her body on pikes. When Akira sees her head lifeless on top of a pike, he snaps and incinerates her killers.
- Back from the Dead: In other stories such as Violence Jack she comes back to life. Devilman vs Hades ends ambiguously to leave it whether only Persephone, Miki, or both revive in its ending.
- Chickification: Miki in just about everywhere else outside the original manga, somewhat in Crybaby, the first OVAs and Devilman Grimoire. Originally she pushed Akira into becoming more active and insisting that he fought back against people who bullied him, and eventually she liked Akira even more when he became more aggressive in his Devilman days. Other adaptations however, like the Anime and the final OVA, like to portray Miki in a more pure light; she is not shown to be amused by Akira being aggressive and certainly does not encourage him to fight anyone, and even in AMON where she retains her original personality, the aggressive part is still gone.
- Chuunibyou: Believes herself to be a witch in Devilman Grimore, to the point where it started embarrassing Akira as they grew up.
- Cruel and Unusual Death: No matter which version of Devilman you watch (except Toei Animation's in which she lives), this inevitably happens to her. Best she gets? Decapitated with a katana after finding the chopped up remains of her kid brother, then your corpse chopped up and put on display. Second up, shot in the leg, seeing your friend's murdered corpse, having your back cut wide open, then your corpse chopped up and put on display. Worst? Having your back cut wide open, and still being very much alive but too injured to fight back as you are stabbed repeatedly in front of your best friend.
- Cute Witch: Miki in Grimoire likes to wear a pointed witch's hat and a dark cape to evoke this image.
- Ethical Slut: Alongside her implied Sukeban status, she calls her own obsession with post Badass level up Akira as being a "massive slut" in the second OVA.
- Good Is Not Nice: Downplayed. She's a Nice Girl overall, though she still has her jerkish moments (See Jerk with a Heart of Gold).
- Jerk with a Heart of Gold: even though she's sometimes mean to her younger brother, Tare, when he pisses her off and is verbally abusive towards the delinquent characters, she's still a kind hearted girl who cares about those around her.
- Kill It with Fire: Miki uses home-made Molotov cocktails to attack the people who break into her house late in the manga.
- Kill the Cutie: One of the nicer girls in the story is slated for a shocking murder caused by a witch hunt when she is unable to flee (And in Crybaby, unable "pass the baton" to Akira), setting up Akira to become a Woobie, Destroyer of Worlds.
- Knife Nut: Miki carries a knife with her during her second confrontation with Dosu-Roku's gang.
- Love Interest: To Akira in Devilman, Ryo in Violence Jack, Amon in the 70s Devilman anime and Grimoire, and Jun Fudo's younger brother Hikaru Fudo in Lady.
- Morality Pet: She is one for Akira, following his transformation into Devilman, this is noticeable especially when Akira hits the Despair Event Horizon upon witnessing her gruesome murder.
- In the Toei anime, she's the reason Amon turned back against his own kind after being sent to destroy humanity.
- No Guy Wants an Amazon: In the manga, she seems somewhat ashamed to have Akira witness her aggressive side, probably due to believing that he wouldn't be interested in a tough woman.
- Plucky Girl: To the point that you can play as her in the NES game, and even have to defeat a mini-boss while using her. The only way to stop her when she has a goal in her mind would be killing her. Sadly, that's exactly what happens in the manga. Which makes her horrendous death by stabbing and dismembering even more tear jerking.
- Sacrificial Lion: She gets killed near the end of the series when she tries to stand up for Akira.
- She's Got Legs: In the Apocalypse OVA, she's wearing a miniskirt that shows off her legs rather nicely. Unfortunately, the best example of this particular trope is during her murder.
- Spared by the Adaptation: She only survives in the 70s anime series and Devilman Grimoire. Notably, those are the only adaptations where Ryo/Satan doesn't exist.
- She lives in CB Chara Nagai Go World in which he does exists.
- Unless you count this, she survives in the NES game, which is a faithful adaptation of the original manga.
- Stuffed into the Fridge: Her brutal murder was what caused Akira to go off the deep end.
- Sukeban: It's implied she's one in the manga.
- This Was His True Form: After being impaled by Slum King in Violence Jack, Miki reaches out for Ryo's corpse before dying. Her body disappears and reveal that Miki's soul had used a dog as its vessel.
- Tsundere: She has her moments in CB Chara Nagai Go World and the Toei anime where she has a tendency to hit Akira.
- Brainless Beauty: She transformed herself into a cute but very stupid girl. And she is really aware of this.
- Butt-Monkey: One of the few demons no one, not even Zenon or Devilman himself take her seriously.
- Canon Foreigner: She appears only in the '70 series.
- Gonk: Her real face looks like a car that has drove into a brick wall. She does attempt to fix her face when she has the chance.
- Ineffectual Sympathetic Villain: She lacks intimidating abilities and is too stupid to be considered a threat to anyone.
- Really 700 Years Old: She is regarded as cute in appearance but is actually quite old.
- Too Dumb to Live: after Akira sarcastically tells her to kill herself because “only death can cure a fool” she decides to commit suicide. She soon proves to be too dumb to die later because Akira soon finds her trying to slit her throat with a paper knife (she was worried about hurting herself with a real knife).
- Villainous Crush: She is in love with Devilman and believes that his attempts to avoid her are because he is too shy reveal his (nonexistent) romantic feelings for her.
Voiced by: Toshihiko Nakajima (The Demon Bird), Akimitsu Takase (Devilman PSX), Hiroshi Shirokuma (Crybaby)
- Butt-Monkey: He attempts to fight Akira in CB Chara Nagai Go World, only to keep falling from heights at his expense.
- Eye Scream: Akira impales his eyes to release his hold on him.
- Chuck Cunningham Syndrome: Both he and Ghelmer does not appear in Devilman Lady, despite the former stating he'll see Akira in Hell.
- Intangibility: Has the ability to phase himself and others through the walls.
- Off with His Head!: Or at least an anatomical equivalent as akira tears his head off and into the ceiling.
- Those Two Guys: With Ghelmer as one of Sirene's right hand demons.
Voiced by: Fumihiko Tachiki (The Demon Bird and CB Chara Nagai Go World OAV's), Jin Yamanoi (Devilman PSX), Masao Komaya (Crybaby)
- Adaptational Expansion: Crybaby expanded his role further, by possessing a sleazy reporter under his control, and Miki. However Akira is able to get him out of the latter's body.
- Kill It with Water: Can puppet his drowning victims after they've swallowed his spirit. Thankfully he never goes so far as to merge with his prey.
- Those Two Guys: With Agwel as one of Sirene's right hand demons.
- Weaksauce Weakness: His outer watery shell can evaporate with the greatest of ease from Devilman's heat generation
Voiced by: Haruko Kitahama (original series), Yoshiko Sakakibara (The Demon Bird and CB Chara Nagai Go World OAV's), Atsuko Tanaka (Devilman PSX, Crybaby), Masumi Asano (CR Devilman Awakening)
- Adaptational Dye Job: She is practically blue in the Toei anime.
- Adaptational Heroism: Sirene's popularity means that she has been cast in quite a few more heroic roles over the years.
- Adaptational Modesty: The Toei anime and the live-action film gives her a shoulder top-dress to avoid showing nudity. Averted in other adaptations.
- Bond Villain Stupidity: In the Toei anime, she takes her sweet time trying to kill Miki, rather than just kill her then and there. Doing so gave Devilman enough time to save Miki just in time, and results in her death.
- Breakout Villain: She is a Creator's Favorite for Go Nagai and also makes appearances and influences on future works.
- Death by Adaptation: She dies rather anti-climatically in the 1972 anime due to Bond Villain Stupidity rather than fusing with a demon or Kaim.
- Demonic Possession: After Medusa restores her near the end of Lady, she ends up possessing the bearly dead Devilman Noir. Their different appearances fusing together.
- This also takes place in Shin Violence Jack, where she merges with a young woman by the name of Sara.
- Fatal Flaw: In Demon Knight, Ryo suggests her obsession with beauty eventually led to her defeat, as if she were to have fused with more demons throughout her life, she would have surely overwhelmed Devilman.
- Heel Realization: In Devilman Lady, where she realizes her actions concerning Akira and Amon was a self-destructive Lust and that she had been causing Kaim pain because of her actions.
- Irony: In the original stories, she attacks Akira for resisting Amon's possession. In Shin Violence Jack, she is the alter ego of a woman named Sara. And just like Akira, Sara retains her sense of self, and attacks all of her demonic rapists in quick succession.
- Loves My Alter Ego: Sirene loved Amon that resides in Akira; she also shows some interest in Akira's more agressive personality as Devilman, which resembles a Lighter and Softer Amon. In Neo-Devilman she becomes more interested in Akira himself, not for his demon heritage but for his determination.
- Proud Warrior Race Guy: She boasts in having killed numerous demons with her claws.
- Spell My Name with an "S": Is it Sirene, Siren, Selene, or Silene? (Presumably Sirene, though as she is visually based on a siren from Greek mythology.)
- Starter Villain: The villain of the first arc of the manga, and tends to be the first or second antagonist in most adaptations.
- Taken for Granite: Begs Medusa in Devilman Lady to turn her to stone as atonement for letting her obsession consume her and causing Kaim to suffer.
- You Sexy Beast: Akira claims that logically, he should be horrified by the sight of Sirene. However, Akira seems to appreciate the beauty of Sirene's death smile, and admits that she really was beautiful. Maybe that's his devil side talking.
Voiced by: Unshou Ishizuka (The Demon Bird and CB Chara Nagai Go World OAV's), Rikiya Koyama (Crybaby)
- Anti-Villain: Kaim is a demon and like them he seeks Humanity's extinction, but his noble qualities are a forefront of his character in most stories and adaptations. Kaim's love for Silene, his selflessness, and his general lack of Kick the Dog moments all make him more sympathetic than the average demon.
- Declaration of Protection: Dedicates the rest of his life in Hell during Devilman Lady to protect the petrified Sirene.
- A Good Way to Die: He's willing to sacrifice himself if it'll let his love interest Sirene take Devilman down with her.
- Heroic Sacrifice: He sacrifices his body & life to his beloved Silen so she can have the honor of killing Devilman.
- Noble Demon: More than willing to tear off his own head and offer to merge with the dying Siren for one last desperation attack against Devilman.
- The Power of Love: Kaim acts on his love for Sirene to guide his actions. In Lady its shown he only possesses people who feel powerful love for another, as he does to Hayami who had feelings for Jun Fudou.
- Wife Husbandry : If Kaim's love for Sirene is romantic, then this applied, because he essentially raised her after her mother died giving birth to her.
Voiced by: Takeshi Aono (The Demon Bird and CB Chara Nagai Go World OAV's), Hiroshi Naka (Devilman PSX), Hochu Otsuka (Cyborg 009 vs Devilman), Jamieson Price (Cyborg 009 vs. Devilman - English dub), Akio Hirose (Crybaby)
- Adaptational Heroism: Surprisingly, he's one of the good guys in CB Chara Go Nagai World. He's even a family man in that version.
- Adaptational Nice Guy: In the live action movie, he was a delinquent who wanted to be Akira's friend before turning into a demon.
- And I Must Scream: Anyone who falls victim to him are damned to an eternity as a sentient tile in his shell.
- Beard of Evil: Has a messy beard after possessing a human in Shin Violence Jack.
- Breakout Villain: Though he was a one off villain he's easily become one of the most famous of Devilman's enemies and one of the Manga's most recognized characters.
- Cruel and Unusual Death: How Devilman always kills him. Either by tearing off his shell on his back, fusing and overpowering his will, or smash the face in his underbelly, which the last one releases the souls of those he's eaten to Heaven, and crushed by a large rock while as a small turtle in Hell.
- Dies Wide Open: in most adaptations once Devilman dispatches Jinmen by impaling him through Akira's trapped loved one (which depends on the work), Devilman solemnly closes their eyelids.
- Evil Gloating: He loves to gloat at Akira's weakness when he has eaten Sachiko (manga and Cyborg 009 vs. Devilman) or his mother (OVA).
- Expy: An almost identical demon appears in Strange Days; the only evidence that it's not Jinmen himself is that he gets killed and that Jinmen was long dead at this point.
- Fate Worse than Death: Devilman Lady reveals that all those he eats are dragged into hell with him when he dies.
- Hate Sink: Oh so much. He doesn't just kill humans for fun, he gives them a Fate Worse than Death, taunts them and Devilman throughout their fight, uses the heads on his head as shields and enjoys every minute of it. There's nothing about him that will be missed.
- Jerkass: In addition to his sadism and general cruelty, Jinmen makes it a point to be as unpleasant as possible. He revels in the feelings of negativity and his personality is a means to provoke those feelings.
- Insane Troll Logic: He claims to have the moral high ground against Devilman because he keeps his victims alive even after he's consumed them.
- Sadist: Takes pleasure in the suffering of enemies and anything he deems below him, even other demons.
- This Was His True Form: His original form is a normal sized turtle.
Voiced by: Reiko Muto (Original Series), Yuji Mitsuya (CB Chara Nagai Go World), Mitsuki Saiga (Amon: The Apocalypse of Devilman), Yasuhiro Takato (Crybaby)
- Adaptational Ugliness: In the Amon OVA, she's a large head with arms and legs, with an uglier looking face.
- Adaptational Dye Job: Her hair colour often varies depending on the adaptation. Her hair is white in the manga and the PS 1 game, purple in the 70s anime and in Cyborg 009 Vs. Devilman, and red in CB Chara Nagai Go World, Devilman Crybaby and the Amon OVA.
- Adapted Out: In the live-action movie, where she doesn't appear at all.
- Affably Evil: She is never seen being rude and is often very polite and friendly.
- Art Evolution: Her body configuration is often inconsistent in a singles series.
- Cephalothorax: Her torso is her head. Though this also depends on the continuity; sometimes it's only her upper body, sometimes it's just her entire body, and sometimes she has a regular if diminutive torso.
- Death by Adaptation: The Toei anime treats her as one of Zenon's Monster of the Week villains, so she falls towards this.
- Enigmatic Minion: Played with in that Psycho Jenny clearly knows more about the innerworkings of the Devilman universe than her master (including the fact that they are trapped in a neverending time loop by God), but never openly defies Satan at any point.
- Exotic Eye Designs: Geometric-shaped, in fact.
- Monstrous Humanoid: Usually is depicted with her limbs coming directly out of her head. In other versions she's shown as a nude female with her head in the middle of her torso or simply a female humanoid with a big head.
- Nonstandard Character Design: Most demons's character designs are animal-like, creepy or menacing. Psycho Jenny's is just weird, almost comical.
- Perpetual Smiler: Literally: she has no other expression.
- Psychic Powers: Powerful enough to hypnotize Satan himself.
- The Quiet One: Very rarely speaks unless spoken to. Even her brief appearance in Lady she never spoke at all.
- Spell My Name with an "S": Psycho Jenny or Psycho Genie?
- The Stoic: As said above, she probably knows the entire tragedy behind the series, but she obeys Satan without a doubt and never even comments on any event.
- Undying Loyalty: To Satan. She'll follow his orders no matter what.
- You Don't Look Like You: She has been hit by this no less than three times over the years:
- In the 1972 anime she resembles a disembodied vampire head.
- In Grimoire she has a right hand in place of her arms and legs and five pupils in each eye.
- during the prehistoric chapters of Amon: the Darkside of Devilman she looks more like a goblin.
- The Brute: It's unknown how its power compares to other demons, but is said to be incredibly powerful in all promotional materials.
- Evil Counterpart: To Agira from the Devilman Corps.
- Giant Flyer: Massive and flying.
- No Name Given: Its name is All There in the Manual.
- Our Dragons Are Different: Hydra-like in this case.
Voiced by: Hidekatsu Shibata (Original Series), Shozo Iizuka (CB Chara Nagai Go World), Ryuzaburo Otomo (CR Devilman Awakening), Avu-Chan (Crybaby)
- Bad Boss: In the Toei anime, he's willing to kill anyone who fails him, or wants to live a peaceful life. As witnessed when he has a demon Lita stabbed as an example for wanting a peaceful life.
- Background Boss: In the NES game where he is fought against before Satan.
- Big Bad: In the 1972 anime, he is the sole main villain as Satan/Ryo is Adapted Out.
- Co-Dragons: Along with Psycho Jenny. When Satan is not around, he serves as the Dragon-in-Chief.
- Composite Character:
- In Devilman Lady, he is revealed to be the a result of 5 demons fusing into one. The demons being Demon Lord Dante, Liger, Maria, Judah and a nameless female bird demon (who fused with Liger before he merged with the other 3).
- In Grimoire, Zenon is merely one of the demon forms of Ryo Utsugi aka King Solomon. Ryo Utsugi serves as the Big Bad.
- Demonic Possession: Zenon more than any other demon requires a host. His power after obtaining one makes it easier for demonkind to possess others. Which is why he tricks Dantes reincarnation Ryo Utsugi into going to hell in Lady. Though he resists initially Ryo's personality is consumed as he embraces becoming a monster.
- Dragon-in-Chief: For much of the original manga, Zenon is the mastermind behind everything and most of the demons are working for him. Eventually the protagonists point out that he himself answers to Satan, but since Satan doesn't take over as the Big Bad until the very end, Zenon is The Heavy.
- Dragon with an Agenda: Some adaptations depict him as having his own plans counter to Satan's.
- Even Evil Has Standards: It's implied in the original manga that he believes in the betterment of demonkind and when Silene calls for help he sends a small squadron of demons to back her up. It makes his criticism of Satan for sacrificing Amon come across less as Pragmatic Villainy and more a quasi Pet the Dog moment.
- Genius Loci: Shin Violence Jack strongly implies Skull Castle is Zenon himself. The three skulls at the top of the castle even being placed where the three main heads of Zenon reside. The main head even having the third eye.
- Literal Split Personality:
- Each head can separate into its own separate individual. Liger, Yuda, Maria, the original body, and the unnamed female bird each existing separately in Lady as they work towards their plans.
- Both the Slum King and his son are halves of Xenon in Violence Jack.
- Satan: Well, he is not Satan himself, but his two forms resemble two depictions of Satan The Divine Comedy Version (being a demon with 3 faces) and The Dragon of Revelation. Akira in Lady does state he is Satan when fused with Satan.
- Scaled Up: Can take the form of a mu'ti-headed dragon if he wishes. Which he does at the end of Violence Jack.
- Servile Snarker: Zenon's loyalty to Satan and his goals is never in question, but this did not stop him for criticizing Satan for sacrificing Amon and other powerful demons so that Akira could become Devilman.
- The Unfought: In both the original anime and manga, Akira never fought him. Subverted in the NES where he is the second-to-final boss.
The real identity of Ryo Asuka. Actually an angel, but allied with and the ruler of demonkind. His main goal is the obliteration of humankind so that demons can regain control of the earth.
- Anti-Villain: All Satan wishes is to free demonkind, let them retake their rightful place on earth, and stop God from condemning them. Despite Satans dislike of humanity in Devilman Satan very much cared for all other life on earth as much as he does demonkind.
- Big Bad: The main antagonist of Devilman.
- Cosmic Plaything: God regularly destroys and recreates the universe for the sole purpose of tormenting Satan by having him relive the loss of Akira forever and ever.
- Death by Adaptation: Maybe? The NES game has him making the same monologue he did in the manga, but is defeated by Devilman in the good ending is achieved.
- Evolutionary Levels: Lady reveals Satan can make humanity evolve even sooner into their next stage of life: demonkind.
- Heel Realization: At the very end of the Devilman, he realizes that his wiping out humanity was just as bad as God wiping out the demons. AMON implies that he came to the realization earlier on, not that it changed anything.
- Hermaphrodite: In his/her true form, having both breasts and male genitalia.
- I Let You Win: The final battle of Violence Jack has Satan only stand around and never attack Devilman. Even when Devilman was on the verge of attacking him he only tried to dodge, implied to be Satan not wishing to kill Akira again like he did at the end of the original manga.
- Laser-Guided Amnesia: Forgets his true nature as Satan several times, but eventually remembers it.
- Light Is Not Good: Presented as such in the original manga. Spinoffs, sequels, etc. have portrayed Satan differently.
- Literal Split Personality:
- Love Makes You Crazy: Although Amon revealed God has set the situation up to ensure Satan goes mad from love no matter what.
- Otherworldly and Sexually Ambiguous: Satan and all the other angels are shown to be Hermaphrodites.
- Screw Yourself: Satan does this via Jun Fudou and Lan Asuka in Devilman Lady, allowing Akira to be reborn in the process.
- Split-Personality Merge: Jun and Asuka at the end of Devilman Lady.
- Time Travel: Uses it in Shin Devilman during the time where he had forgotten his name Satan. He traveled with Akira to kill demons in the past who were attempting to change the future.
Voiced by: Rie Tanaka (Amon: The Apocalypse of Devilman)A girl fused with the demon Tollg, one of the first Devilmen.
- Adaptational Badass: In the manga, she's basically a victim of the Demon Busters who disappears after being rescued by Akira. In other continuities, mainly the Amon spinoff manga and OVA and a couple Neo-Devilman stories, she's a full fledged member of the Devilman Corps and has real fight scenes (albeit a losing one in the OVA).
- Adaptational Intelligence: In her dedicated Neo-Devilman story, Miko is said to be an academic high-achiever despite being a delinquent and not studying much. This is never brought up in any other material.
- A Date with Rosie Palms: Her origin story at Neo-Devilman shows she was possessed by and fused with Tollg while she was masturbating for emotional comfort.
- Affectionate Nickname: Miko, Mi-Ko or Mico depending on the translation.
- The Atoner: A former shoplifter, she thinks her body change is a punishment by God.
- Badass Longcoat: In the Amon OVA, she wears a black trenchcoat without anything under in order to fastly cover and uncover her acid spitters.
- Does Not Like Shoes: Her nudist versions go around barefoot, despite the fact that shoes wouldn't obstruct her natural weapons like clothing does.
- Full-Frontal Assault: As her weapons are located where her naughty bits should be, the fastest way to get them ready for battle is stripping down. For this reason, some of Miko's versions in Devilman media even opt to go around fully naked all the time.
- Freakiness Shame: She's naturally afraid of people seeing her mutated body. She gets over it in continuities where she's shown to become a Devilman Corps fighter, turning out comfortable enough to even ditch clothing altogether.
- Nice Hat: Usually wears a checker hat or something similar.
- Super Sex Organs: She can emit a powerful acid from orifices in her breasts and groin, the last of which is actually Tollg's face.
- Torpedo Tits: An acid variation.
Bonds of Hinduism
A group of six Hindu monks fused with demons who help Akira.
- Bald of Awesome: All of them are bald, as per the monk rule.
- Determined Defeatist: In the Amon manga, they are constantly stating how screwed they all are with the menace of Amon, but to be fair, they never stop trying to save the day.
- My Brain Is Big: The only sign they are Devilmen are their enlarged skulls.
- Psychic Powers: Their specialty. They have psychic powers that surpass Akira and the rest of the founding Devilman Corps put together, although possibly not Psycho Jenny.
- Vagueness Is Coming: In the Amon manga.
Devilman's mount in the Devilman Corps.
- '90s Anti-Hero: His backstory in his dedicated Neo-Devilman story pictures him as a big dude roaming the country while butchering demons with an Arm Cannon, a cape and a nasty expression on his face.
- All There in the Manual: The Demon Bible artbook gave his fused demon's name as Lamegdlle. Canonically dubious, though; with Neo-Devilman officially naming him Agira, it's currently unclear if Lamegdlle's name is non-canon or if Agira and Lamegdlle are meant to be respectively his name and his first fused demon's.
- The Assimilator: He's talented at fusing, and absorbs even parts of demons to enhance his body.
- The Big Guy: Is the larges Devilman by a huge margin and probably the strongest next to Akira himself.
- Blood Knight: Before being part of the Devilman Corps, he just went around killing demons.
- Desperately Looking for a Purpose in Life: Before meeting Devilman.
- Giant Flyer: Especially in his last form.
- Good Counterpart: To Caliorruar, Satan's own dragon mount.
- Horse of a Different Color: Akira rides it during battles.
- Humanoid Abomination: Even back when he was still (relatively) human, he had antennae, a pincer arm and a couple human faces in his stomach.
- No Name Given: He was never named in the original manga, receiving instead his official name in Neo-Devilman (his story in the anthology was later integrated into the Revised Edition of Devilman, though).
- Our Dragons Are Different: His mount form is a massive draconic monster.
- The Stoic: He lives to fight, not to emote.
Mr. and Mrs. Makimura
- Voiced by Taimei Susuki (Mr. Makimura), Natsumi Sakuma, Rihiko Yoshida (Ms. Makimura) (Original series)
- Cruel and Unusual Death: They both become subjected to Cold-Blooded Torture by the Demon Hunters.
- Good Parents: The two are kind and loving parents, even raising Akira as one of their own as he lost both of his parents.
- Men Are Tough: Mr. Makimura in the manga. He is a gruff, scruffy man, and his response to Akira's fighting in school is that it's good for men to fight a lot while they're young. Played straight in the worst way possible when Akira finds him still alive in the Demon Hunters' torture chamber, having undergone unspeakable torture along with his wife (who has already perished). He lives just long enough to utter Akira, Miki and Tare's names (meaning that he's trying to tell Akira to get out of there and go straight back and protect Miki and Tare) before he also expires.
- Papa Wolf: During the demon's opening onslaught, Mr. Makimura grabs a rifle to protect his family. When push comes to shove he successfully fights off an attacking demon with it.
The younger brother of Miki.
- Boom, Headshot!: Poor kid gets his head stapled to the staircase by a crossbow bolt in Amon: Apocalypse of Devilman.
- Bring My Brown Pants: He mentions several times that he pisses himself when afraid. He does so in the Amon OVA when he witnesses the carnage Akira can create.
- Butt-Monkey: Moreso in the Toei anime where he has a tendency to have a Potty Failure.
- Cruel and Unusual Death: He gets brutally decapitated by the angry mob, and said mobber proudly displays his severed head after throwing his body downstairs.
- Embarrassing Nickname: His given name is Kensaku, Tare being the Japanese word for drip, in reference to his week bladder (interestingly he only expresses an issue with this name in the first episode of the 1972 anime).
- Puppy Love: In the Toei anime, he has one with a girl his age named Miyo.
- Spared by the Adaptation: He lives alongside his sister in the Toei anime.