Yeager

Mr. Yeager is the father of Fay and Grisha

Appearance
Mr. Yeager is a middle aged person with mild wrinkes on the forehead and face, he has short, black hair, round eyes, and wears a formal outfit with a tie underneath his clothing.

Personality
He seems to leach what the higher ups tell him, as seen when officials are talking about how Grisha and Fay escaped to watch the blimp, he even calls his son an idiot

The Uprising arc
Mr. Yeager is first seen when he is in the court room where he was discussing Grisha's "Sin"