Talk:Grimm/@comment-98.92.155.191-20140810171752

What if the reason the Grimm lack an aura because they're the manifestation of dark aura or for every creature with aura that dies (doesn't matter how) depending on the amount of aura they have they turn into a certain type of Grimm.

An example if they're were dinosaurs in the rwby universe and they all died for multiple reason over time they turn into Grimm.