Question: are zeke and eren related?
Answer: In the manga, his identity is eventually revealed as Zeke Yeager, who as you might expect, is related to Eren (though the surname name is spelled Jaeger in the anime). Zeke is Eren's older half-brother. They have the same father, Grisha. ... Yeah, that's actually Dina Fritz, Grisha's first wife and Zeke's mother.