Could the Tyranids be some sort of bio-weapon or universal Materium antibody designed to defeat Chaos?
We don't know how the Nids came to be, only that they destroy all life in their path. Their Shadow blocks and interferes with the Warp and their minds and bodies are so alien that they are effectively immune to the influence of the Powers of the Warp.
We know that the Nids consume all bio-matter on the worlds they devour, leaving nothing left; thus, if they were successful in consuming the Galaxy, the Gods of the Warp would likely starve and die while the Warp itself calmed, fixing the Eye of Terror.
We know that the Nids were drawn to the Galaxy by the Pharos, a device that amplifies emotion and sends it out into the Galaxy like the Astronomican.
Emotions fuel the warp, the Pharos takes and amplifies emotions, Tyranids sense the super intense burst of emotions and interpret that as "Prey/Food". Since Emotions are the fuel of the warp, that would make the Tyranids hunters/enemies of the warp.
There was some speculation once that the Tyranids might have been created by a handful of surviving Old Ones as a way to try and erase their mistakes.
>>54664031
The best end in 40k if for the universe to be eaten by space locusts who then leave. The necrons could then just chill
>>54664031
Doom of Malan'tai eats souls, denying them from reaching the Ruinous Powers, thus further proving the theory
>>54664031
No.
One, The Tyranids in Shadowbrink were confused when they met the daemons. They have no idea what they were and had no preexisting tactics against them.
Two, Chaos seeks to end all life in the galaxy anyways. The lore says so. Nurgle in 8th ed lore is seeking to create a plague to end all plagues that will erase all life in the galaxy. So that makes the Tyranids redundant.
Furthermore, the Warp extends to other galaxies and other dimensions. The death of life in this galaxy means nothing to Chaos. Life will always exist somewhere and Chaos will find it.
>>54664170
It's a freak evolution that was created fro Eldar DNA. The Hivemind doesn't have the power to deny Slaanesh xir want.
In "Valedor", Slaanesh appeared from the depths the Warp above Duriel. It casually pushed the Hivemind aside and consumed the souls of the dead and dying Eldar on the planet before returning to the depths.
Nope. If Chaos truly wants, it can just push the Shadow aside. Hence why Tyranids ~try~ to avoid Chaos.
Tyranids also have no defenses against corruption. The Iron Warriors use corrupted cyborgified hiveships as Titan transporters.
>>54664200
To add to this. The Tyranids need a rewrite like the Necrons. Their "devour all life" shtick is already taken by Chaos.
The Necrons goal of exterminating all life was written off the setting with the exception of a minor faction called the Destroyers. The majority of the Necrons are neutral to life or seek to preserve it for various reasons. The Tyranids require this kind of rewrite to differentiate them Chaos and expand their creative options.
>>54664306
Not to mention that Tyranids have no means to handle warpstorms. The lore says that they just avoid them.
And if they cannot avoid them, they get totally annihilated like what happened recently in the Baal system.
>>54664031
>Could the Tyranids be some sort of bio-weapon or universal Materium antibody designed to defeat Chaos?
No, but the Ultramarines are.
They could be, but lore strongly suggests that's the Orkz (Krorks when they were engineered)