A. Publicly Released Information
B. Generally Recognized Information
The First Angel. The white giant crucified in Terminal Dogma.
C. Confidential Information
The entity, a progenitor of life, implanted into Earth by the First Ancestral Race. It was discovered at the South Pole by the Katsuragi Team, but, during the investigation, it blew apart and degenerated due to its S² Engine artificially going out of control.
D. In-Depth Information
There hasn't been a soul within Adam. At the time of Second Impact, its body was torn apart, and its soul flew off somewhere as a result. Adam's soul was later recovered by Seele and incarnated.
Because the Evas are a part of Kaworu's own body, he can manipulate them freely. However, he cannot go into them, for the reason that there are souls within the bodies.