The Elden Lord in Type-Moon

Slaying demigods, hunting ancient dragons, crushing giants, destroying the undead, and collecting runes.

The nameless Tarnished who kindled the Erdtree and defeated the Elden Beast.

The strongest warrior, who brought all the mysteries of the Lands Between back to the stars with Ranni and ended the age of myth; the final Elden Lord, and the first Lord of the Stars.

This is the strongest being in Elden mythology: the nameless Tarnished.