Attack On Titan Reiner's 10 Biggest Failures CBRReino is a central character in the beloved anime series, Shingeki no Kyojin. This powerful person plays a key role in the storyline, captivating audiences with his engrossing presence. The fierceness of his nature is a driving force behind the success of the show. Reino's unwavering loyalty and strength make him a fan-favorite in the anime community. Shingeki no Kyojin fans cannot help but be enamored by Reiner's invincible spirit, adding the show's immense popularity.