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THE REVISED MONSTERFUCKING SCALE (RMFS)

[Clarifying Note: The tiers are arranged in order of distance from the concept of humanity, not how socially acceptable it would be to fuck any one type of creature. Examples are included to give a general idea. It is not required to find all or any of the particular monsters listed personally appealing to rate oneself as that tier.]

Tier 1 [Human-equivalent]: Creatures such as vampires, elves, dwarves and other fantasy races that look human with slight variations, like pointy ears. Examples: Astarion from BG3, Jacob Elordi's Frankenstein's Monster, various Hobbits. 

Tier 2 [Human-spicy]: Like tier 1, except some features are not 1:1 human analogous, such as abnormal size differences or skin color. Examples: Na'vi from Avatar,  Tiefling from D&D, entry-level catgirl with ears + tail. Androids with visible machinery and most zombies are included in this tier. 

Tier 3 [Half & Half]: The creature has some human features and some monstrous features that are inextricably linked. Example: centaurs, mermaids, catgirls with full-body fur, Sonar from Dispatch, the Minotaur.  

Tier 4 [Humanoid monsters]: Full monster creature that maintains several  human-analogous features, such as bipedalism, a mouth, two eyes, four limbs, and a humanoid body shape. Examples: Venom, Vecna from Stranger Things, Groot, Davey Jones from Pirates of the Caribbean, the monster from The Shape of Water, Pyramid Head. Humanoid robots are included in this tier. 

Tier 5 [Non-humanoid flesh and blood monsters]: Creatures that have clear inhuman features but are made of organic, flesh-adjacent material. The creatures are alien, but not disgusting by default. Examples: Mike Wazowski & Randall from Monsters Inc., the Xenomorph, more tentacle-forward mind-flayers. Most dragons are also included in this tier. This tier assumes all creatures have a solid bodily shape.

Tier 6 [Non-flesh, non-humanoid creatures]: The creature doesn't look at all like a human and is also not made of flesh-like materials that humans understand. The creature is not disgusting by default. Examples: Rocky from Project Hail Mary, Wheatley from Portal, Flowey from Undertale. Non-humanoid robots and most slime monsters are included in this tier. This tier assumes all creatures have a solid bodily shape. 

Tier 7 [Depravity]: These horrors are fundamentally designed to be disgusting, distressing, and as far removed from humanity as possible, such that even most seasoned monsterfuckers would be perplexed and disturbed upon meeting them. This tier also includes non-anthropomorphic, animal-like creatures* and monsters whose material form is so otherworldly and esoteric that it would make sexual encounters difficult without extreme dedication. Examples: visibly rotting and diseased non-humanoid creatures, parasitic alien worms, Biblically accurate angels, Eldritch horrors, the Loch Ness monster, undersea fish creatures, and shapeless beings such as puddles or sentient molds. 

Tier 8 [???]: The thing you want to fuck is so beyond the scope of man that it lacks the ability to fuck you back, or indeed, even perceive your desire. You are a meaningless speck of dust jacking off in the periphery of this creature's existence. Congratulations! You've surpassed monsterfucking and achieved existential monster voyeurism. Now go home and cry as you listen to Disco Elysium music. Examples of this tier include: The Void.

*For tiers 7 and below, it is assumed that all creatures pass the Harkness Test.