F TIER
WORST OF THE WORST; NOBODY WOULD DARE HAVE ROBOT SEX WITH THESE CREATURES, REPENT IF THY DOES. '


SOMETHING WICKED
Okay, bro, listen, you can not SEX a stick figure, I know rule34 says otherwise and MAYBE you can try doing some ROBOT SEX with it, but in the end, it doesn't even matter, I had to fall to lose it all, But in the end it doesn't even matter.


HAMPTER (Florp)
My man, my brother in christ, my dear sibling... How do I put this in words... It is, a Hamster... A hamster, how can you EVEN EXPECT, SOMETHING FROM THIS ?
If you really thought i'd rate SEX with a Hamster you are beyond dilusional, I will cut. You. Down. Break you apart. Splay the gore of your profane form across the stars! I will grind you down until the very sparks cry for mercy! My hands shall RELISH. ENDING YOU HERE. AND. NOW!!!


Cancerous Rodent
Again, an animal, this time, filled with RADIATION. Glowy !
No, you can not sex it, even if it is a glob of RADIATION... probably some uranium kind of... stuff... Do not sex it.

Idol
A STATUE ?
ARE YOU FOR REAL ? DO YOU WANT TO CONSIDER THIS ?

Virtue
A glowing glass angel with sharp wings and golden stuff???
I dont know man, glass fetish ? Do what you feel like but the Virtue is literally is unsexable, nothing you can do with it, completely F tier, perfect example of something unsexable.

The Ferryman
Okay listen, all skeleton-like enemies will sadly have to end in the D tier, you can not really do much with it, it's... bones... a husk ? I dont know man, what I mean is, there isn't much to work with, sex is not possible.

Mysterious Druid Knight (& Owl)
Same as the Ferryman, it is simple BONES, you can not do ANY SEXUAL INTERACTIONS WITH THEM. Now, the owl is an animal, so nono.

Corpse of King Minos
Okay, we are finally getting to the more FLESHY side of ULTRAKILL, we are in the "SEX" Area alright ! But not so fast, we are talking a CORPSE HERE, oh my god !
Yes, a maggot infested giant corpse that wants to actively kill you, that doesn't even sound APPEALING AT ALL, the major downside to them is the fact they are NOT ALIVE, like, don't even consider it, D-Tier.

Flesh Prision
Flesh Prision is simply not in the SEX-RANGE of things, simply you can not sex it, it's too big, too clumsy and unmanagable, not a sexable thing, bad D-TIER here.

VERY CANCEROUS RODENT
HOLY MOLY HE IS HUGE, THICC, HOLY F-
Maaaaan, that's a big boy, but they are still a rat so D TIER.

Stalker
Stalkers are a bit more, fleshy i'd propose, but they are still on the decaying side, more like the Corpse of King Minos, which you know, it would be kind of an... uncomfortable experience to have sex with, so yeah, though they seems to have a great flexibility and curves, solid C-TIER

Cerberus
Though choice, Cerberus have a humanoid like body which gives them good proportions and almost perfect for sex if it wasnt for the fact they are made out of STONE, you cant sex that, but for imagination points, they are nice.

Maurice
Same problem with Cerberus, they sadly have a STONE body, no sex. :(

Sisyphean Insurrectionist
Okay, C Tier for the Sisyphean Insurrectionist, why ?
Because there is a few problems, the Sisyphean Insurrectionist feels like a husk, they might be dead or a living corpse that just moves and attacks, but we cant deny they have some CAKE, and we dont know what gender they are so it might be both a woman or a man, meaning sex is capable both ways, the true problem, is the lack of an upper-body which means no head, quite literally, no head.

Leviathan
Okay, Leviathan is a more difficult case to solve, the huge size of it can make it quite dangerous to attemp any sexual interactions with it, they might crush your entire body and kill you in the process, but if you're a giant as well, they might be the throat-goat you've been looking for, good ridance.

Drone
The drone is a B-TIER, they are built perfectly for them to being handled with ease by your hands, meaning that a modded drone with an installed Onahole inside would make the sex experience with said robot, simply great.

Streetcleaner
The streetcleaners are humanoid robots, which means they can be built for sex porpouses in mind or modified for such, being GREAT options thanks to their already humanoid appearence, they are quite the deal ! Solid B Tier.

Sentry
The Sentry has some humanoid appereance on their bottom half which means that they also in the area where they can be modified for SEX, meaning that the same scenario with drones, a robotic onahole into that posterior would make it a perfect match for sexual interactions with it.

Soldier
Soldiers are husks but they are also FLESHY, meaning no robotic modifications, REAL FLESH, real sex ! Finally ! But they are also heavily modified husks to be soldiers so they might be lacking those sexual desires, so sadly, they are forced into B tier.

Swordmachine
You get the deal with robots so far, so no need to explain why Swordmachine would make a great sex experience.

Hideous Mass
They are quite big and chunky, ugly as hell, and sorry not sorry they are not what I would define a great sex experience, but in their defense, they are quite fleshy, meaning natural sex holes are a thing, good stuff.

Schism
I'm just gonna say this, all Husk enemies have the same deal going on with them, fleshy bodies, perfect for simple sex, great stuff, so yeah, no need to go one for one.


Filth & Stray
Both B Tier, Same with Schism

V2
Now V2 is amazing in many ways, but he wins a spot over the other robots, because of its importance on lore, also to the similarities with V1, which makes him amazing, good sex robot indeed.

V1
V1 also is amazing, like V2, both amazing sex machines that can be programed and modified for the best sexual experience mankind could have experienced, if they werent dead.

Mindflayer
The Mindflayer is an amazing example of a humanoid robot that can make perfect sex, great curves, great design, they also fly, meaning they can be the ride-machine of a life-time, ideal, perfect, and overall a solid 9/10, NICE S-TIER

Minos Prime
Minos prime is a solid, his body of pure energy would be an unimaginable sex experience, they are also quite experienced as they are quite an old soul, meaning they would make your sex the BEST you've could wish for, perfect S-TIER, great stuff but not PERFECT...

Perfect...

GABRIEL

THE BEST SEX YOU CAN HAVE IS WITH THIS ANGEL BOY, BEAUTIFUL VOICE, BEAUTIFUL BODY AND CURVES, SHINY AND HANDSOME, HIS ARMOR AND GLORY GLOWS IN GLORY; THEY ARE SIMPLY THE BEST, SEX WITH THEM WOULD BE A OUT-WORLD EXPERIENCE; GREATEST PLEASURE KNOWN TO MAN, IT WOULD BE PERFECT

...
Perfection.

So, as we can see, there are quite amazing things in ULTRAKILL to have sex with, some are pretty bad of course but we cant deny some of these enemies/creatures hit P, so I conclude this Tierlist and Guide with a goodbye and have fun !
Sex Man Out.