Thread:Face Monster/@comment-24691393-20170222030914/@comment-30711988-20170222073837

From the Library Mode: So all Archenemies with cores have pseudo-identities which allow them to Observe themself to be stronger.
 * Artificial Identity : An identity that smelts a within the Boundary. This forms the core allowing a  to Observe itself, and further establish its own existence.

As for Murakumos, I don't think it was explicitly said whether they can Observe, but a Kusanagi, the perfect Prime Field, is definitely a powerful Observer.