Quote Originally Posted by Silverraptor View Post
Hey. I recently heard someone theorizing that the Tyranids were actually another race created by the Old Ones used mainly as a fire line to beat back the Necrons by destroying worlds and taking the life away from the world so the C'tan wouldn't have the souls to consume and therefore not go to these planets culled by the Tyranids in favor of other planets that do have life on them, and preferably that direction is away from the Old Ones. That certainly seems like a plausible theroy, but then again, so does the theory of "they are running away from something worse then them". What are your guy's thoughts?
Although my headcanon is that the Tyranids are a weapon that's gone horribly right, I'm with Glyphstone on this one. If they'd been created by the Old Ones, it would not have taken them this many millions of years to start showing up in the Milky Way again.