Yeah, forget what I said. Upon rereading stuff, Ramuh was part of the "Olduum civilization" (or so the legends say). That was just Aydeewa (which has tower things eerily similar to Pso'Xja and Horutoto) and several other thingies right? Not Alzadaal? Someone has to explain Alzadaal to me again.
EDIT: According to
this, Emperor Alzadaal built it 900 years ago? Or was Alzadaal the original Alexander and stuff built in his reign were based on it?
Also, with this whole building a new vessel for Alexander and Luzaf becoming the next rider, the whole things becoming avatars seems more likely.