User blog comment:Zathronas/Speculative author: My top 13 Questions for Volume 3/@comment-2.217.222.158-20141026210028/@comment-24891101-20141026211209

The Grimm are almost entirely unlike animals. They're clearly not alive, for one thing. This has led to a number of theories, ranging from supernatural origins to Clarkean supertechnology to emergent universal property. Likewise, the origin of humans on Remnant is controversial, as the opening narration and the very name of the planet suggest.