The Primordials are beings that out date almost everything including Angels but not the Archangels God used them to create the earth by shpeshifting into Kronous and killed Ouronus by cutting off his genitles and started a great Primordial war that created the earth
The Primordials are living embodiments of elements and being just as old as Leviathans it can be assumed they can fight on equal grounds with them if there were any left
Vast Streangth:being olde as the universe it can be asumed they can overpower almost any creature including leviathans and titans.
Invulrability:they are able to be shot cut stabbed decapitated but they will still live on
Immortality:given the fact that they predate reapers and the sisters of fate and the furies they have no potential for death unless they are killed by something of equal or greater power only God Death The archangels and the Leviathans can kill them with certainty and other Primordials