!!Manga
* AccidentalAesop: [[spoiler: Jun's relationship with rival Aoi Kurosaki can be for a realistic depiction of the LovingBully growing up. While Jun does not wish ill will towards Aoi when they meet again and learns Aoi's horrible back story, she also remembers how Aoi treated her when they became rivals and at worst was an arrogant jerk to Jun. When Aoi returns after recovering from their first fight and becoming a fellow Human Alliance member, Jun has in the meantime been reminded of all the bad ways Aoi was rude to her growing up and rebuffs her romantic advances. Yes, people can be confused by their emotions and ultimately realize that they in fact are attracted to a person they bully, but their victim may not be receptive to their feelings and will remember how they felt while being bullied over their bully's new feelings of attraction.]]
* ArcFatigue: A common complaint is that at too many points the manga seems to go on what appears to be its final arc only for it to reset status quo and return to MonsterOfTheWeek format again.
* EnsembleDarkhorse: The Archangel Michael is the most popular character in the manga and is often included in fanworks of the original {{Manga/Devilman}}.
%%* NightmareFuel: Oh man, there is a ''lot'' of shit you won't want to remember...
%%* {{Squick}}: Take your pick of any volume.
* TheyWastedAPerfectlyGoodCharacter:
** Mita, the Devil Beast boy known as the Mouth of Truth, escaped alive from his encounter with Jun and was apparently setting to become a vigilante on his own. However, he didn't return afterwards and was never mentioned again.
** Jim Langer/Devilman Liger seems to be an important character when he's introduced in the fifth volume, but he basically disappears afterwards and doesn't return until the last volume. His role as the Human Alliance's second Devil Man and his interesting relationship with Jun are points some feel should have been more developed.
* TooBleakStoppedCaring: With 17 volumes chock full of dismemberment, rape, trauma and all sorts of monstrosities, it can become a bit tame for the reader at some point.
* ViewerGenderConfusion: Unlike most of GO Nagai's work, this one gets a surprising subversion. (And a complete aversion in the anime adaptation)
%%* TheWoobie: Oh, dear lord, Jun.

!!Anime
* CompleteMonster:
** [[spoiler:[[TreacherousAdvisor Lan Asuka]], [[AdaptationalVillainy unlike]] in [[Manga/DevilmanLady the manga]], is revealed to have been manipulating protagonist Jun Fudo the whole time. First awakening Jun's powers as a monstrous Devil Beast by letting another attack and try to rape and eat Jun, Asuka forms [[InLoveWithYourCarnage a lust towards Jun's alter-ego of Devilman Lady]] and constantly toys with her and her friends. Asuka [[ManipulativeBastard manipulates conflicts]] throughout the series between humans and the mostly peaceful Devil Beasts, resulting in camps formed to hold and exterminate all the Devil Beasts. Asuka lures Jun to her and reveals her true intent: Despising the world and all in it, Asuka, who had been born both male and female, wants to use Jun to become [[GodhoodSeeker a new God of the world]]. Asuka paralyzes Jun and then, demanding Jun "prove" her love for Asuka, rapes a traumatized and terrified Jun before informing her [[YouHaveOutlivedYourUsefulness Jun had been born solely for her and would now die for her]] before disposing of her. When Jun returns, the newly deified Asuka mocks her, saying being perfect was too good for a "hideous creature" like Jun before trying to destroy her in their final battle. Valuing her own ego above all else, Asuka is a manipulative and cruel embodiment of lust and selfishness.]]
** Satoru, the [[EnfantTerrible seemingly young leader]] of the militant Devil Beasts, is an absolute {{sadist}} who believes in the [[KillAllHumans genocide of humankind]]. Devoting himself to the supremacy of Devil Beasts, Satoru inspires the awakening of them as feral beasts who slaughter those around them while masterminding a series of brutal terrorist activities that claim many lives. With no patience for Devil Beasts who fail to embrace his fanaticism, Satoru sees them as [[CategoryTraitor enemies to be annihilated]], especially Jun Fudo, who Satoru dedicates himself to destroying mentally. Satoru, at one point, abducts and brutally murders Jun's friend/LoveInterest Kazumi while mocking her over the death of "one human", before attempting to finally kill Jun himself. Sinister, cruel and monstrous, Satoru shows that he and [[spoiler:Asuka]] are simply two sides of a dark coin.
* CreepyAwesome:
** Satoru, along with many of the monster designs.
** Also, the [[https://www.youtube.com/watch?v=nYWK2Ao6ZqY opening theme]].
* MoralEventHorizon: Aside from Jun, Kazumi and a couple of other minor characters, this concept doesn't exist. To ''anybody''.
* {{Narm}}: The Christmas-themed MonsterOfTheWeek screams "Merry Christmas!" when he dies.
* SpiritualAdaptation: With its thematic Hitchcockian psychological aesthetics, Pino Donaggio-like episodic music and heavy erotic doses of {{Fanservice}} --[[InterplayOfSexAndViolence often linked in some way with violence against women]] mixed in together, it gives off a vibe Creator/BrianDePalma adapted the manga into this anime. Even the TheReveal aspect that the [[spoiler:mission provider for the hero turns out to be the BigBad]] can bring in mind De Palma's film ''Film/MissionImpossible1996'', which was theatrically released two years prior to the airing of the anime.
* TearJerker: [[spoiler: Even if you were [[ShipToShipCombat hoping for Jun to end up with someone else]], Kazumi's death is still ''really'' tragic. Especially since the two had finally affirmed their love for each other not long beforehand.]]

----