Attack on titan
Ymir Fritz seems to have a more important role in determining the storyline. This little girl was the first to have the power to become a titan for the first time.
The Fritz clan begs Ymir to help the Eldians to destroy the Marley nation. Ymir had three children named Maria, Rose, and Sheena who ate it when she died. They are the ones who inherit the power of the titan in the world.
