TV-Series
Description
Zeke Yeager, the Beast Titan, commanded Marley's Warrior Unit with the singular goal of retrieving the Founding Titan from Paradis Island. He was the son of Grisha Yeager and Dina Fritz, making him the older half-brother of Eren Yeager and a royal-blooded Eldian descendant through his mother. This lineage granted him unique Titan command abilities.

In human form, Zeke possessed a tall, broad build, blond hair, blue or gray eyes, and wore distinctive circular glasses. After returning to Marley post-Shiganshina, he sported shorter hair and a trimmed beard. His 17-meter Beast Titan form featured an ape-like appearance with elongated limbs, dark fur, and disproportionately long arms, showcasing exceptional dexterity and lethal throwing precision.

Zeke combined cold intellect with emotional detachment and tactical ruthlessness. He led decisively, enforcing obedience through brutal displays like crushing disobedient Titans or disciplining Reiner Braun. Despite this militaristic demeanor, he expressed pity for Paradis citizens, viewing their struggle beyond the Walls as a "tragedy" fueled by stolen memories. His nihilistic worldview, forged from childhood neglect and Marleyan propaganda, concluded Eldian suffering could only end through racial extinction via Founding Titan-induced sterilization.

His background involved deep trauma. Enlisted by Grisha in Marley's Warrior Program to infiltrate the military for the Eldian Restorationists, he endured parental neglect. Poor performance led to ostracization until a mentorship with inheritor Tom Ksaver validated his baseball skills and shared Titan curiosity. Overhearing the imminent Marleyan discovery of the Restorationists, Zeke begged his parents to stop. When Grisha refused, citing Faye Yeager's death, Zeke reported them—resulting in their deportation to Paradis as Pure Titans.

As an adult Warrior, Zeke manipulated Marley and Paradis factions to advance his euthanasia plan. During the Shiganshina battle, he orchestrated Titan forces to nearly destroy the Survey Corps, killing Commander Erwin Smith before being captured by Levi Ackermann. After a four-year hiatus, he allied with Eren to access the Founding Titan, believing they shared victimhood under Grisha. This alliance shattered when Paths-revealed memories exposed Eren manipulating Grisha to kill the Reiss family, laying bare their conflict: Zeke sought Eldian reproductive cessation while Eren pursued the Rumbling's global annihilation.

Zeke's abilities surpassed standard Titan shifting. His royal blood enabled him to transform Eldians exposed to his spinal fluid into Titans with a scream, demonstrated at Ragako Village, and command them verbally. He exhibited potent regeneration, surviving near-fatal thunderspear wounds and dismemberment by Levi. In Paths, his encounter with Ymir Fritz and realization about life's value—triggered by reminiscing about baseball with Ksaver—led him to sacrifice himself to halt the Rumbling, enabling Levi to kill him and sever Eren's royal connection.