Colt Grice, an Eldian from Marley and devoted older brother to Falco Grice, ascends as a Warrior candidate chosen to inherit the Beast Titan from Zeke Yeager—a path forged to reclaim his family’s honor tarnished by his uncle’s ties to the Eldian Restorationists. Standing 180 cm tall with sharp light hazel eyes and short blond hair, he dons the Marleyan military uniform adjusted with Eldian insignia and the mandated Eldian armband. Calm, disciplined, and burdened by responsibility, Colt’s unwavering priority remains shielding Falco, evident when he throws himself into enemy fire during the Marley-Mid-East War, using his helmet to protect his brother before hauling him to safety. Though respected for tactical precision and leadership among peers, he grapples with insecurity over succeeding Zeke, whose prowess he reveres yet doubts mirroring. Off the battlefield, his restraint unravels into recklessness: excessive drinking loosens his emotional control, contrasting his otherwise stoic demeanor. Engaged in strategic planning with Commander Theo Magath and Zeke against Paradis, Colt later navigates the chaos of Willy Tybur’s festival in Liberio. Amid Eren Yeager’s assault, he fights to safeguard Gabi Braun and Udo, only to witness Udo’s fatal trampling. Desperation mounts as he discovers Falco’s accidental ingestion of Zeke’s spinal fluid, propelling him into a race against time. During Paradis’s final battle, Colt implores Zeke to halt the Titan transformation, pleading for Falco’s salvation. Zeke’s refusal triggers the irreversible shift, yet Colt clings to his brother, embracing him as the explosive transformation engulfs them both. His death, marked by unyielding loyalty, concludes a life defined by sacrifice for Falco’s survival, while his complex bond with Zeke—threaded with mentorship and clashing ideals—lingers unresolved.