Adtigence

Adtigence refers to the algorythm created by the Third Beacon of Darkness, Exter, to use on the Reborn-Androids. They are one of the intelligent species that inhabited the world of Remnant.

While some doubted they could be considered a race, the complexity of their logarythm that allowed them to develop feelings and personality convinced most people of it even if they don't have a soul.

There are a few androids developed enough that were considered Adtigences even if they don't have the logarythm. Being those two androids with souls (Penny and Buck Polendina), two androids with a modified version of the Adtigence logarythm (April and U.D.A.I) and the Master Computer that is capable of restoring an android into a new body if they were destroyed.

Background
Adtigence are known for being the race with the best adaptibility as they update on their own constantly. Even if they are destroyed, the Master Computer can restore them in a new body.

As an artificial-non biological being, they don't possess a soul and their ability to develop feelings and personality is purely a product of their advance logarythm.

Creation
The first prototypes didn't have the logarythm and were simple androids, although they were already far more advanced than any other androids that already existed. Once Exter was pulled out from the Blackgate, he created the Adtigence logarythm and the Master Computer, creating them officially. U.D.A.I has a modified version that allows him to evolve but not to to develop feelings or personality while April was created before the logarythm itself based on notes Merlot and Watts found out Exter left behind before be arrested.