Bf 151 Nevermore

"Holy flying cow! It's a Bf 151 Nevermore! It's like having flying to a magical world with pixie dust... and STEROIDS! Darn it! I hate it when these Nevermores are trying to destroy Beacon Academy, because after this, they're gonna destroy my own village soon!"

--Su Ji-Hoon, Operation: Invasion Der Zukünftigen Akademie

Bf 151 Nevermore are large, dark, bird-like Grimm creatures that are tamed by the Nazi Union. Only Nazi Union Beowolves can use a Grimm machine (made by the Nazi Union) when they are smarter than any human when Waffen-SS officers are teaching the Nazi Union Beowolves for create more Nevermores.

They are breeding Nevermores (a type of birds that the Beacon Academy students fear) but the Nazi Union can tame or they can be convinced by Hermann Fegelein, like this:

"To these Grimm monsters that came under my control, we will help you all to can defeat Beacon Academy students and our enemies, but now we can't hurt you. We are just those good humans, the Wehrmacht, the Coalition of the Red Star, and me Hermann Fegelein. We are your benefactors, and we are a strong Wehrmacht. Me and the Nazi Union will help you to equip a new weapon, a new armor, and to attack Team RWBY and the other bastardly teams of Beacon Academy. Stand up and fight the Beacon Academy students. You can do it. Good luck... for the Nazi Union and the Coalition of the Red Star."

Fegelein would say this so they can tamed and helped to join the Nazi Union. When they are trained, they can remember the Nazi Union. Bf 151 Nevermores can wear heavy armor, use their metal claw, and can move faster, but only one Sturmtruppen or a Waffen-SS officer can ride a Bf 151 Nevermore with two abilities: a head-butt charge, and throwing spear-like feather quills.

In battle, they are better than regular Nevermores, because they are remembered by the Wehrmacht, have high attack, have an ability to ride with one Sturmtruppen or 1 SS Officer, and are trained by the Wehrmacht to attack Beacon Academy students.

They will fight for Hermann Fegelein, the Nazi Union, and the rest of the Coalition of the Red Star.