Bertholdt Hoover is a quiet and introverted individual who tends to get lost in contemplation. He sees himself as someone with a weak will, often swayed by popular opinion, and prefers to stay in the background unless required. Despite his inner turmoil and guilt over his actions, he displays a detached and cold demeanor during combat. However, his loyalty and devotion shine through when it comes to his fellow warriors, particularly Reiner Braun and Annie Leonhart.