Is the ape Titan Eren's dad? - Quora

Why did Grisha gave Eren the Attack Titan? : r/ANRime

Grisha Yeager, My Little Pony w/ Reiner and Bertholdt Wiki

This scene hits differently with Eren as the father. : 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

Why did Eren not inherit his father's memories? - Quora

How could eren manipulate grisha? I mean he was just seeing grisha's memories, wasn't he? Then how could that happen? (He was not even using founder's powers, zeke had control over that)

Why did Zeke betray Grisha in AOT? - Quora

Grisha Jäger, Wiki

torment – RABUJOI – An Anime Blog

Grisha Yeager (Canon)/Hikana, Character Stats and Profiles Wiki