Attack On Titan Reiner's 10 Biggest Failures CBRReino is a central character in the adored anime series, Attack on Titans. This formidable person plays a key role in the plot, captivating audiences with his compelling presence. The intensity of his character is a driving force behind the success of the show. Reiner's unwavering loyalty and strength make him a beloved character in the anime community. Shingeki no Kyojin fans cannot help but be enamored by Reiner's unstoppable spirit, adding the show's immense popularity.