Caffeinated Spider: A reference to any instance where Rachnera is drunk or intoxicated after drinking coffee (due to her spider biology causing her to become intoxicated from consuming caffeine much in the same way human biology cause humans to become intoxicated from consuming alcohol).Spooder: A cutesy term used in reference to spiders.Loli Rachnera: A collection of fan-made artworks featuring Rachnera as she would possibly look like as an innocent, 'wide-eyed' child before she became the cool-headed, cynical adult she is in the series.This reference is jokingly made by character-haters when listing the character's undesirable features, and variations exist for other species of monster girls, such as ' Snake Cloaca' (see above). Meaning that if a devoted fan wished to sleep with her they would be interfacing their human-half with her bestial-half and committing pseudo-bestiality during intercourse. A reference to the fact that while she may behave and be able to interact just like a human, Centorea's lower body (and by extension, her genitalia) is equine. Horse Pussy: This meme originates from a panel of the centaur-themed doujinshi Ja Ja Uma Sailor Fuku/ Wild Horse In A School Uniform, by Kuroshiki, with altered dialogue, but has gone on to be used in reference to other centaur characters, Centorea included.This reference is jokingly made by character-haters when listing the character's undesirable features. Bird Cloaca: A reference to the fact that while she may behave and be able to interact just like a human, Papi's lower body (and by extension, her genitalia) is avian.Birp: A cutesy term used in reference to birds.Snake Cloaca: A reference to the fact that while she may behave and be able to interact just like a human, Miia's lower body (and by assumption, her genitalia) is serpentine.Snek: The cutesy term 'snek' derives from a deliberate spelling mistake in a caption of a photo of an Indian woman holding a giant snake, the popularity of which led to an entire subreddit devoted to images of snakes with and without additional cute interior monologue.As the fandom orients the character as a representative of their species, to create an image of the character as a different species is jokingly referred as 'committing heresy'. (eg Rachnera Arachnera as a Centaur, Centorea Shianus as a human).

Heresy: A type of Monster Musume fan-created image that features a specific character as a completely different species than what they originally were.Usually as part of a proclamation of devotion or a rally cry. Best Girl: A term fans use to refer to their favoured female character.

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