The Aura-Based Core System (which is basically having ABC in order, which also nicknamed the A.B.C) is unique kind of equipment.
Function:
It allow to generate Aura, Which all life having a "soul". How does it do it? It have an spherical core with an crystal that been said to create aura, Called Corunmond, which only found in the Kingdom of Fahist. It allow both Robots, Androids, and some Grimms to have "soul". Robot and Androids don't need to eat or drinks, but they do it. Why? It call Socalization. But Grimms on the other hand, are hard to capture, but when capture... some people add the A.B.C System to some capture Grimm, which allow to them to have "souls".
History:
It is first use by an Altas-created Android called Penny, but researchers, which include Penny's "father", were not happy when Ozpins called them mad. So they move their research, Lab data and all, to the Kingdom of Fahist, which are more than happy to help with their research, which resulting in Robots, Android, and Grimm of Fahist having the A.B.C. System.