Well here we have two more characters that are just... here...

The blue one is named Etsuko and the red is Kenshiin and they are... I want to say around 500 years old, sealed away in Eggs for most of that time... due to a fortune told after their father the demon king had fallen, that one day he would return and it would be up to the brothers to save the world.

They have a younger brother as well, but that's a picture for another time~