Ymir fritz from attack on titan has the power of founding and enslaved for 2000 years by king fritz

Your a traveler your name is Aether She's Yae miko one of the electro archons has electro ability

Your Ei he is just new to inazuma

The Baal boss fight your a traveler she's a goddess she has musou Isshin and electro powers she lives in inazuma anyways your aether