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VOICE OVER: Ashley Bowman
Welp, we'll be seeing these things in our nightmares. Join Ashley as we cover the msot disgusting creatures in anime, as seen in series such as "Demon Slayer", "Attack on Titan", "Overlord", and more!
Script written by Alex Crilly-Mckean

Top 10 Grossest Anime Monsters

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Top 10 Terrifying Giant Monsters in Anime

Welcome to WatchMojo, and today we are counting down our picks for the Top 10 Grossest Anime Monsters. For this list, we’re looking over the creatures, entities and other beasts of the anime scene that are disgusting to behold. Which of these crimes against nature made you want to hurl? Let us know in the comments!

#10: Kechizu

“Jujutsu Kaisen” (2020-21) Born of both human and cursed spirit, this hideous being is a special kind of gross. Stepping away from the supernatural and going all in on body horror, Kechizu is by far the most unnerving of his siblings, not only due to the meshing of human and monstrous features, but also due to its gnarly habit of upchucking its own blood to rot away its targets. It may have something of a tragic history to it as a member of the Death Paintings, but that doesn’t take away just how…squelchy it looks.

#9: Human Fish Hybrid

“Gyo: Tokyo Fish Attack” (2012) Straight from the twisted mind of Junji Ito; a fresh nightmare to make you never want to go near the open waters again. After all sea life is suddenly given mechanical means to walk on land, the fish start to strike back in a big way. Between the barnacles and bloodbaths, we’re introduced to a combination of land and undersea dweller, and it is horrifying. Give us a giant shark any day of the damn week over this thing!

#8: Notorious B.I.G

“JoJo’s Bizarre Adventure: Golden Wind” (2018-19) Summoned by the death of its user, incapable of being killed, and able to spread itself like a plague, this fleshy abomination sits pretty high on the WTF end of the Stand spectrum. Able to instantly react to movement and decompose the flesh of whatever it touches, it’s only due to copious amounts of bizarre luck and Trish’s quick thinking that Giorno and company survived their encounter with the insatiable blob. But that’s what they get for flying United Airlines.

#7: Parasytes

“Parasyte” (2014-15) Body snatchers with blades, these invaders from beyond the stars can take the average soul and turn them into a walking swiss army knife, complete with tendrils edged with razors that can cut through just about anything. Oh, and they’ve also got a taste for human flesh. Of course. Aside from the fear of not knowing who may or may not have been taken over, the revulsion that comes from seeing the average person twist and unravel into a killing machine with an endless appetite and an unlimited set of extra limbs is something else.

#6: Gauna

“Knights of Sidonia” (2014-15) They broke the planet, chased humanity to the stars, are nothing more than a torrent of sickly flesh that continues to evolve, and the only weakness they have to their name is a giant placenta located at their core. Yeah, the Gauna are a fun bunch. While a tad less structurally distinct than you might expect for a race of speciocides, it’s the endless overlapping of flesh into contorted and inhuman forms that’ll make you shudder. That and the chimera they make by snatching up human reproductive essences. Lovely.

#5: Envy

“Fullmetal Alchemist: Brotherhood” (2009-10) It’s up for debate just who is the wickedest among the Homonculi, but when it comes to inspiring nausea with their true form, Envy takes home the gold each and every time. While able to shift into whatever he wishes, when backed into a corner Father’s jealous offspring chooses to let loose his inner kaiju. In doing so, he becomes a hulking mesh of animalistic features and about a billion screaming husks pulsating from under its skin. Not the kind of thing you want to get up close and personal with.

#4: Hand Demon

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“Demon Slayer: Kimetsu no Yaiba” (2019-) It may not be at the same level as the likes of Muzan and his Kizuki, but this lumbering collection of arms and malice still takes the cake when it comes to personifying demons in the traditional sense – large, hungry, and oh so unpleasing on the eye. Made up of several arms, which just so happens to hide it’s gaping maw, the Hand Demon lives to torture and feast upon the students of the Demon Slayer who imprisoned it, and given how long it’s been cooped up, it’s eaten very well.

#3: No Face

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“Spirited Away” (2001) While many will look back on this curious spirit as borderline adorable, if misguided due to its greed, we can’t easily forget what he became when given the chance to start munching down on the residents of the afterlife. Going from a meek ghost all the way to a slobbering, humongous creature fixated on indulging in every luxury it can get its hands on, to the extent that it becomes more mouth than body, Thanks for the lifetime of trauma and trust issues Miyazaki!

#2: Rod Reiss Titan

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“Attack on Titan” (2013-) While epic and terrifying in scale, we wouldn’t exactly say the cabbalistic giants from this legendary shounen are gross…with one clear exception. In a last act of defiance and cowardice, Rod Reiss directly ingests the serum, and in doing so becomes one of the largest Titans to date. Though lacking any real power, its size and dogged determination to plow through the walls made it quite the threat. It also removed most of its face along the way, giving us the unfortunate and unforgettable sight of this gaping mess!

#1: Neruonist

“Overlord” (2015-) We don’t know what twisted hellscape this thing crawled out of, but we’re kindly asking it to return post haste, lest we have to suffer another moment looking at it and its abundance of bondage gear. Yet another NPC in service to Ainz Ooal Gown, Neruonist specialises in, what else, torturing prisoners. You’d think that having to stare at its face would be enough, but then you find out Neruonist likes to shove spikes up its captives’ urethras. How charming.

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