Ken Takagi, operating under the hero alias Rock Lock, is a Pro Hero distinguished by his sharp pragmatism and analytical mindset. His appearance features dark, tightly coiled hair styled in a short afro, key-shaped protrusions extending from his fingertips, and a costume comprising a yellow eye mask, a red key-adorned necklace, and a bodysuit patterned with keyholes. His Quirk, Lock Down, grants him the power to immobilize objects in space upon contact, erecting barriers impervious to movement unless deactivated or shattered by overwhelming force. This ability culminates in his Ultimate Move, Deadbolt—a defensive technique triggered by a spinning hand motion to anchor his surroundings. Complementing his skills, he employs a portable tile for aerial footholds during missions. A dedicated family man married with a young son, Rock Lock channels his protective instincts toward U.A. students, viewing them through a paternal lens. In the Shie Hassaikai Raid, his skepticism toward their participation clashed with their determination, leading him to openly critique their inexperience. However, witnessing their combat prowess and resolve shifted his perspective, culminating in vocal pride for their growth. His loyalty to allies overrides personal grievances, exemplified when he prioritized evacuating Eri over engaging the League of Villains. During the Paranormal Liberation War Arc, Rock Lock spearheaded the assault on Jaku General Hospital, facing off against Dr. Garaki and High-End Nomu. He coordinated efforts to subdue foes and bolstered Eraser Head’s countermeasures against Tomura Shigaraki’s Decay Quirk, emphasizing teamwork to neutralize threats. Surviving the hospital’s collapse despite injuries, he persisted in aiding allies, underscoring his strategic focus. In *Heroes: Rising*, Rock Lock launched a pursuit of the League of Villains until Dabi’s intervention forced him to abandon his immobilized vehicle, curtailing direct combat involvement. His persistence highlighted a willingness to confront danger despite setbacks. Rock Lock’s character embodies a nuanced tension between skepticism and mentorship. While his pragmatism collides with youthful idealism, he adapts upon recognizing competence, as seen in his critique of Sir Nighteye’s reliance on Foresight and subsequent demands for accountability. Post-mission reflections reveal an undercurrent of concern for younger heroes, mirroring his role as a father and reinforcing his drive to balance efficiency with guardianship.