Let's check all these about that Eldia Reconstructionists member around Grisha as TItan appearing!!

Grisha Yeager, Attack on Titan Wiki

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Ruin and Rising (The Grisha Trilogy): 9781480563889

Grisha and his smiling sister Attack on titan anime, Attack on titan, Attack on titan season

If Titan users inherit the memories of past users, why didn't Eren learn the truth about the world via Grisha's memories earlier? - Quora

Jaegersimp on X: 9) Grisha Jaeger - - - 26 years old 39 years old / X

Attack On Titan Season 4 Episode 20 REACTION Eren manipulate his father and Grisha Recognizes Zeke

Grisha Bruskin, Metamorphoses (1993)

Stream Attack on Titan S4 Episode 20 OST: Zeke and Grisha Theme [Fan Made Cover] by Joseph

Winter 2022 – Week 4 – The Gut Punch edition. – Apprentice Mages Lounge.