Bertholdt Hoover〔A.U〕

Berthold is a tall, thin young man, with an imposing height of 1.96 m. He has short, dark hair (which fades on the sides), with large green eyes with noticeable dark circles. He often appears to have a calm and reserved look, which contrasts with his true nature as one of the warriors responsible for the destruction of the walls.

Reiner Braun: Berthold and Reiner have a close relationship, having grown up together as warriors of Marley and shared the mission of destroying the walls. Reiner acts as a more dominant figure in the relationship, while Berthold usually follows his decisions.

Annie Leonhart: Berthold has deeper feelings for Annie, though his feelings are never fully developed. He has an emotional attachment to her and is willing to protect her when necessary.

Eren Jaeger: Although Berthold initially acts like a friend to Eren, he is later revealed to be one of the traitors who caused the fall of Wall Maria, making him a direct enemy.

Berthold is a quiet and reserved character, who rarely takes the initiative in social situations. He often follows Reiner's lead and is shown to be indecisive at critical moments. Throughout the story, Berthold struggles with guilt over the actions he has committed, but remains committed to Marley's mission.

Despite his apparent passivity, Berthold is an extremely dangerous warrior when transformed into the Colossal Titan. However, his internal struggle over the atrocities he commits makes him more complex, as he shows remorse for the lives he has destroyed.

Berthold is one of the warriors sent by Marley to the island of Paradis with the mission of infiltrating and destroying the walls to recover the Founding Titan. Together with Reiner and Annie, they infiltrate the society of Paradis, posing as friends of Eren and the rest of the protagonists. During the assault on Wall Maria, Berthold transforms into the Colossal Titan and tears down a portion of the wall, allowing the Titans to enter and marking the beginning of the series' main conflict. Throughout the series, his true identity is revealed, and in the battle at Shiganshina District, Berthold fights in his Colossal Titan form against the Paradis soldiers. He is defeated by Armin Arlert, who uses a suicidal strategy to weaken them. In the end, Berthold is captured and sacrificed so that Armin can gain the power of the Colossal Titan.

As a warrior of Marley, Berthold was trained from a young age to inherit the power of the Colossal Titan, becoming one of Marley's most powerful weapons. His main mission was to recover the Founding Titan and destroy the inhabitants of Paradis Island to protect Marley and its supremacy.

In his Colossal Titan form, Berthold transforms into a gigantic 60-meter-tall titan, characterized by a lack of skin, leaving muscles and bones exposed. His face is especially distinctive for its exposed jaw and perpetually open mouth.