Why did Zeke betray Grisha in AOT? - Quora

That Day (Episode 57), Attack on Titan Wiki

The EM argument killer. Grisha tells Mikasa is his daughter and

Grisha Yeager/Gallery, Villains Wiki

Worst parent figures and their children : r/attackontitan

Attack on titan: Why did Grisha Yegar not reveal the truth of the world to the people inside the walls? - Quora

Grisha had Zeke at 19 years old. Zeke was raised by teen parents. : r/titanfolk

Did Eren's father steal the Founding Titan to bypass the first king's will, allowing Eren to get rid of the world of Titans? - Quora

Eren-Carla is special : r/titanfolk

Manga Spoilers) Is Grisha a bad Father? : r/ShingekiNoKyojin

What Grisha saw in Eren's memories vs the Ending - Forums