Zeke Yeager, also known as the Beast Titan, is a pivotal antagonist in the anime series 'Shingeki no Kyojin' (Attack on Titan). As a member of the Marleyan military, he serves as the Warchief and is a key figure in the conflict between Marley and the Eldians residing on Paradis Island. Zeke is the half-brother of Eren Yeager and possesses the power of the Beast Titan, which grants him a formidable presence on the battlefield. Intelligent and strategic, his motivations are driven by a complex past and a grand vision for the future of the Eldians.