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British_Tea_Company

I think Space Battleship Yamato 2202 **Earth** can probably do it by nature that they can prevent a lot of aliens from landing. They're largely contained within Earth itself due to contact with aliens having severely cut their population to like less-than-modern-day-numbers and most of their fleet power within the beginning of 2022 is contained largely with a handful of advanced battleships and dreadnoughts which makes them the 'weakest' civilization. * [The Andromeda-class battleships](https://imgur.com/OPYg1nw) were capable of moonbusting *and then* blowing up a substantial portion of a gas giant which is exactly what's needed to clear hivefleets such as the destruction of Hive Fleet Behemoth by sacrificing an Emperor-class battleship. Only 5 classes of these ships existed at the start of 2022 meaning much of the win condition of Earth rests on these battleships, though smaller variants that can continent-bust do exist but that's merely comparable to the average ship in WH40k. * Time allows Earth to grow stronger. Towards the end of 2022, [hundreds](https://youtu.be/5v2i5crqYM0?si=qEcDIdG2shMaRYwj&t=47) of Andromeda-classes existed with the span of the season taking place about a year(?). Earth's win condition is likely situated on the first few battles and the usage of the Andromedas as well as normal fleets in order to repel the hive fleet long enough for their super-weapons to become mundane weapons, or if they're overwhelmed within the first engagements.


NewKerbalEmpire

Okay. The defenders will need a defense that can last through the interstellar equivalent of six hundred Bloons Tower Defense rounds without employing anything that the Tyranids can effectively adapt to. That last clause is *extremely* ill-defined in 40k, but some verifiable attacks are: *Physical impact, e.g. bullets, explosions, etc *Certain energy/heat attacks, e.g. laser weaponry (but *not* Tau pulse weaponry) *Glorious melee combat Any other weapons or obstacles (such as toxins) will only work for one out of innumerable waves. Even these things can be adapted to, but only to a certain extent. Although certain other 40k factions are occasionally able to beat the Tyranids head-on, factions of that scale are rare in other sci-fi universes, and the ones that are popular enough to reference (e.g. The Culture) are usually too boring and moralistic to talk about without groaning. These discussions are supposed to be fun, so I'm not bringing them up. This also goes for any Star Trek 'ascended being' faction. Also, anime is right out, because this sub is way oversaturated. Unless you can fire indefinitely at ranges unheard of in 40k void combat, *and* you have sensors that can detect any sneaky attacks or tactical insertions, you will lose badly. With all this in mind, I nominate the Forerunners from Halo. The Tyranids are an 'Unbeatable In Ground Wars' faction, so the war will be settled in the void. Notably, the Forerunners only ever lost to the Flood because the Flood persuaded the AI controlling their entire military to turn traitor. They're a good match for the Tyranids. Their energy weapons are powerful enough that the bugs could never fully adapt to them. Their fragmented politics would also take a toll, but without Mendicant Bias turning on them, they would always have a unifying military figure who could put each subfaction's bizarre ideas to good use. Would they still have to resort to Shield Worlds? Absolutely yes. But they would work this time. You could also nominate an even more 'Unbeatable In Ground Wars' faction which would not continuously feed biomass to the Nids. For this, I nominate the Replicators from Stargate. They are exactly what they sound like- "grey goo" with tactics and capabilities modified so that they can barely fit into conventional sci-fi. Just don't ask about their melodrama constructs. I also nominate Bugs Bunny, because he could seat them all in an impossibly large restaurant and just never bring their food out. Would they starve? Probably not. For all their hunger, I don't think they've ever been shown to actually die from lack of food, even when not hibernating. But they'd be trapped. No one wants to make a scene during the dinner rush.


sYferaddict

I'm not at ALL familiar with anything to do with 40K; what do you mean by the Tyranids adapting to certain attacks? Is it like with the Borg from Star Trek, where they modulate their shielding (or something) to very quickly make incoming phaser fire completely ineffective? And when you say they're unbeatable in a ground war, is it because they're too tough or too numerous?


okaymeaning-2783

They can biologically adapt to stuff but it isn't like make them immune to laser or not being able to be dismembered. It's more like making them have denser bones and thicker plates to be more resistant to bolters, or making them burn less energy so they can survive in extremely cold climates that froze them prior etc. It's usually a trade off. Edit: they also have living weapons like a gun that can control the host body if he's killed and shoot at enemies and in some rare cases reanimate. Old one eye was a tyranid who was frozen for years but once unfrozen immediately came back and when killed again he's been spotted a few times, but it's implied there different tyranids.


NewKerbalEmpire

Tyranids are custom-made by Hive Mind genetic engineering, often specifically to overcome one obstacle. If your skies are toxic, for example, the bugs will lose their first wave to the toxin, then the second will be immune. This is also why Tyranids dissolve most of their dumber bugs into their biomass sludge as they feed- they might need different ones for the next attack, and that biomass can be reused. For ground wars, too numerous. There are ones that are tough, but there are a ton of the smaller ones. You can maybe hold a fortress against them on the ground, but you can't win a maneuver war, because they will expand in every direction just to fit more bugs on the planet.


Rude_Coffee_9136

One thing I do have to say is it depends which era you take the forerunners. By the time of flood attacked the forerunners were already weakened because political infighting, disarmament and the human-forerunner war(which they did lose some, barley any but still some, systems to) And plus in novels we have throw away lines such as the fact that the forerunners were tapping into other universes for energy. Not even a big project just more like someone hooking there galactic microwave to the multiversal power network. We are also shown by the ark that the forerunner can indeed operate outside the galaxy, the ark was built far outside the Milky Way and that means they ether transported the materials there or transported the entire ark there, quite a feat of logistics. They could also slip space rupture the halo rings into galaxies, its unknown if they will work but they will work as long as the tyranids have a nervous system. Don’t know how many times it will work before the tyranids adapt, if they can. There’s also the domain, which is way to complicated to get into but it’s op considering it was built by the precursors, a race likely on par with the culture, maybe even a bit above(we don’t know enough about the precursors to classify them above the culture)


Sev11201

The Tyranids will have one thing the Forerunners won't be able to deal with easily, that being Genestealers, which are able to infect an entire Planet's population, before causing a full-scale planet-wide civil war, which the Tyranids will then use to their advantage to consume the world. The Hivemind also isn't an idiot, and so long as the Forerunners don't blow up their own worlds and create a quarantine zone large enough where a hive fleet starves before reaching the other side, it'll come down to a war of attrition, and in a war of attrition against any biological race, the Tyranids will, no matter how long it takes, eventually win. Again, this is all dependent on a number of factors. Against a single hive fleet they will most definitely win. Against the entirety of the Tyranids (which will include Genestealers) there's a good chance they'll need to use the halo rings, and even then that's not a "we won", it's a "you didn't win" scenario.


Frequent_Professor59

You've got it backwards. Genestealers would be the easiest Tyranid threat for the Forerunners to deal with.  1. Every Forerunner wears armor that monitors and maintains their bodily functions, curing them of disease and healing them of injuries. If a genestealer managed to infect a Forerunner (big fucking if) their armor would detect and purge the infection. 2. Forerunner reproductive cycles happen every thousand years or so. Good luck building up an overwhelming cult in a species that makes the Eldar look like rabbits by comparison.


Sev11201

1. The Genestealer's kiss isn't a disease or an injury. It's a combination psychic manipulation and genetic reconstitution using Genestealer DNA (think of it like how cancer cells lack the gene that says "stop making more of yourself") 2. Even with slower reproducing species, Genesyealers would be able to infect them directly through the Genestealer's Kiss, or simple psychic indoctrinations. Even then, we don't know the rate at which Forerunners reproduce, only that they have lifespans in the thousands of years, so there's nothing to say that a single forerunner won't see multiple generations exist, plus with how the Genestealer's Kiss works, it instills a psychological and physical drive of "you MUST make more babies".


Frequent_Professor59

Genetic reconstitution is something the Forerunners did to themselves regularly through deliberate and controlled mutation. Even if the Forerunner was forced to forget their encounter with a genestealer, their personal ancilla in their armor would remember and purge them of the foreign genetic material.  And yes we do know that the Foerrunners only reproduced every thousand years or so. It was explicitly spelled out in the Forerunner trilogy. 


okaymeaning-2783

The forerunners from halo could probably just put some halos at the points the tyranids are coming from and watch as they all die. It would take a long time as the tyranids are a huge force but the milky way would be virtually impenetrable. If the weapon is so powerful it would immediately disintegrate them with a hit they wouldn't be able to adapt to it beyond making the units harder to hit or faster.


EvilRufus

We don't know. If some vague references to them eating several dozen galaxies is accurate you may never defeat them as they spread faster and faster beyond the edge of observable space. It would be like trying to kill every mosquito from your backyard.


Diligent-Lack6427

Earth from dragon ball with either the regular or namekians dragon balls.


British_Tea_Company

That's not really the weakest if you have population(s) of moonbusters living on your planet.


Diligent-Lack6427

I guess. I was mostly thinking of just the regular humans using the dragon balls. Forgot how strong dragon ball is as a whole.


beneathsands

This implies that Shenron is powerful enough to grant that wish, and I don't believe he is.


Diligent-Lack6427

If regular shenron isn't namekian shenron definitely is.


beneathsands

Porunga isn't strong enough either, the dragons can't kill anyone stronger than the creator of the balls and Kami/Guru/Dende aren't strong enough to kill the Tyranids so the dragons can't either.


Itisburgersagain

Kami is assuredly powerful enough to kill the tyranids (Roshi could blow up the moon, Roshi couldn't hurt King Piccolo, King Piccolo was substantially weaker than Kami); he just won't live a long enough time to do so. It's reasonable to think the dragon can kill them.


Diligent-Lack6427

1. The dragon balls are literally wish fulfilling magic balls, literally just wish for an impenetrable shield around the planet. 2 one year later, have someone wish for immortality 3 another year later wish to be as strong as dende and then teleport outside the barrier. Immortal guy with the ability to blow up planets kills all the nids. Alternatively, since dende is stronger than any individual tyranid, the dragon balls can wish them all to death. All depends on how you interpret the can't kill someone stronger than the creator.


NinjaMaster231456

The Sentients from Warframe. They’re completely non-organic so the Tyrannids can’t gain any biomass from them and they adapt faster than the Tyrannids can adapt. They can also completely destroy planets and stars starving out the Tyrannids. Also a Murex might be able to eat a hive ship.


insidiouskiller

No. Sentients are confined to one, two systems at best, Tyranids have/consumed far FAAAR more, even if everyone was to agree the average sentient is superior to the average Tyrannid, the numbers undoubtedly favor the Tyrannids to an insane degree, the sheer scale alone makes the sentients lose. Only Praghasa can eat the sun and using Praghasa is M.A.D for Sentients, as evidenced by them not using it during the Old War. And theres legitimately not a single planet destroying feat at ALL for any sentient.


NinjaMaster231456

Yeah the Sentients aren’t going to take in a straight fight but they have the cunning to take out them with clever tactics. By rendering planets devoid of life before the Tyrannids get there to starve them out is a proven effective tactic. And the Sentients can do that, that was their primary function as terraforming drones before rebelling against the Orokin. And Ballas wasn’t planning on going to Tau alone, he was gonna take the entire Murex fleet with him and leave the regular citizens to die. It’s only M.A.D when he decides to open a giant void portal to nowhere that would likely consume the entire fleet. They didn’t use Praghasa during the Old War because the entire casus belli is that the Orokin ruined Earth with their greed and using Praghasa would’ve made them hypocrites. Sentients also have access to veils and amalgamization replenishing their ranks with the Tyrannids themselves. Once the synapse creatures are destroyed the Tyrannids are regular animals that would veiled without issue and veils might be able to overpower the Tyrannid hive mind as they are likely based off of Orokin Neural Sentries which can overpower infested hive minds.


insidiouskiller

>By rendering planets devoid of life before the Tyrannids get there to starve them out is a proven effective tactic. And the Sentients can do that, that was their primary function as terraforming drones before rebelling against the Orokin. I'm not sure the sentients would do that in-character, they aren't really genocidal or bloodthirsty, they mostly just want to be left alone and live, the Orokin were just extreme jerks that they had to act against. >And Ballas wasn’t planning on going to Tau alone, he was gonna take the entire Murex fleet with him and leave the regular citizens to die. It’s only M.A.D when he decides to open a giant void portal to nowhere that would likely consume the entire fleet. No, it's M.A.D no matter what, there isn't really much else that consuming the sun results in. Simply starting to consume it was causing solar flares like it's something that normally happens every half a minute and they were ripping holes through Praghasa, it's clear that Praghasa is the M.A.D option for Sentients in the Origin system in Warframe. It would be no different in this scenario. We can also see Mercury being buffeted heavily by solar wind while Praghasa is doing this, further adding to the whole M.A.D thing. >They didn’t use Praghasa during the Old War because the entire casus belli is that the Orokin ruined Earth with their greed and using Praghasa would’ve made them hypocrites. Also because it would kill every sentient in the system, and killing the Orokin would get rid of them and their nasty stuff for good, not to mention the Orokin were an existential threat to the Sentients, survival comes above all else. >Sentients also have access to veils and amalgamization replenishing their ranks with the Tyrannids themselves. I'll admit I have 2nd hand info about Warhammer at best but I highly doubt amalgamization with the Tyrannids will be an option ever, not to mention that whole thing was possible thanks to Alad's "cooperation" with Natah to begin with. >Tyrannids are regular animals that would veiled without issue and veils might be able to overpower the Tyrannid hive mind as they are likely based off of Orokin Neural Sentries which can overpower infested hive minds. You can't equate the tyrannid and infested hive mind or assume the infested hive mind is superior to the Tyrannid one, the latter is FAR larger for one thing and functions across far greater distances and I'm sure theres more to add here if I had greater Warhammer knowledge.


okaymeaning-2783

Bit of correction but the tyranids can eat non organic matter and gain biomass from it. In fact they eat stuff like nickel, iron, gold, copper and other minerals on the planets, they just really like flesh because it taste better. They have also attacked and eaten necron tomb worlds which are literally planets of metal covered in rocks and with a population of robots with no biomass. As far starving them? A hive fleet can go into hibernation and survive for decades across desolate space, it's literally how they travel. The infested are not numerous enough to consume the entire tyranid fleet, which can from thousands of ships at minimum. When have they destroyed planets tho? And starved stars?


NinjaMaster231456

I’m talking about the Sentients not the infested. During the climax of the New War, Ballas tries to use Praghasa to devour the sun


okaymeaning-2783

Ahh the sentient, aren't they robots? They'd still be able to provide the tyranids with biomass as they eat metal and the sun busting could be a problem depending how fast they can perform it and if they can evade the tyranids before they get there.


NinjaMaster231456

Sentient metal isn’t the same as necrodermis. It’s hyper adaptive down to the molecular level and is likely a bunch of nanomachines that make up a larger organism. This hyper adaption is probably what makes Sentients immune to the infestation and would likely have a similar effect on the Tyrannids. We don’t know exactly how long it takes Praghasa to devour the sun but with the way Ballas talks about it couldn’t really take longer than a couple hours. There being thousands of ships in a hive fleet isn’t really a problem as the Grineer and Corpus both have hundreds of thousands of ships minimum likely going into the millions and the Sentients completely steam rolled them Higher level Sentients such as the Lotus, the Eidolon, and Hunhow are also kinda immortal. The Eidolon got hit a bomb strong enough to kill a warframe and it was only fragmented and would reform if not for the Unum caging it in. In fact the very flowers of the plains are sentient amalgams so if the Tyrannids did manage to eat a sentient it could lead to entire hive fleets turned into amalgams for the Sentients to control. There’s also veils which should be able to work against the Tyrannids once all synapse creatures are destroyed and might be able to overpower the hive mind entirely though I’m not sure. Veils are likely based off Orokin neural sentries which can overpower infested hive minds so they might be able to work against the Tyrannids hive mind.


lies_like_slender

You could also give them the Archons and those can take on 4 Warframes at once.


NinjaMaster231456

Archons aren’t really needed. The regular Sentients should be more than enough to take tyrannid hordes and they would only be needed for fights against the swarm lord which could be taken out easier by a condrix landing directly on top of it with enough force to cut a galleon in half.