Bertolt Hoover, an Eldian raised within Marley’s Liberio internment zone, was indoctrinated into the Warrior Unit alongside Reiner Braun and Annie Leonhart. Chosen to inherit the Colossus Titan, he spearheaded the 845 mission to infiltrate Paradis Island and reclaim the Founding Titan. His transformation into a 60-meter Titan shattered Wall Maria, unleashing devastation that flooded Shiganshina District with Titans. Disguised as a refugee from a fabricated mountain village, he fabricated a false identity and enlisted in the 104th Training Corps, graduating third despite his quiet demeanor. Standing at 1.92 meters with a lean frame, short dark hair, and pale green eyes, Bertolt’s nervous disposition manifested in frequent sweating—a trait mirrored in his Titan form’s perpetual steam emission. The Colossus Titan’s skeletal appearance, elongated limbs, and pillar-like feet contrasted starkly with other Titans, its explosive transformations scorching the battlefield with searing heat. Perceived as passive and indecisive, Bertolt deferred to Reiner’s leadership yet voiced cautious pragmatism during covert operations. Though outwardly composed, cracks surfaced during Marco Bott’s execution, his trembling hands betraying inner turmoil. He clung to unwavering loyalty toward Reiner and Annie, though fleeting exchanges with Ymir suggested a buried humanity beneath his warrior obligations. As the Battle of Shiganshina loomed, detachment hardened Bertolt’s resolve. He framed mass violence as an inevitable consequence of a merciless world, coldly vowing to slaughter former allies. Yet traces of guilt lingered when recalling bonds forged in Paradis. In his final moments, terror eclipsed stoicism—his screams echoing as Armin’s Pure Titan devoured him, transferring the Colossus’s power and reshaping the conflict’s course. Pivotal moments included Marcel Galliard’s sacrificial death, the Warriors’ encounter with Ymir’s feral Titan, and strategic breaches of Wall Maria and Trost District. His dual role as infiltrator and soldier underscored his tactical influence, culminating in fatal clashes with the Survey Corps that sealed both his fate and the legacy inherited by Armin Arlert.