[2] He is best known for the voice of Levi Ackerman in Attack on Titan, Koyomi Araragi in the Monogatari series, Trafalgar Law in One Piece, Mephisto Pheles in Blue Exorcist, Izaya Orihara in Durarara!
!, Shinji Matō in the Fate franchise, Takashi Natsume in Natsume Yūjin Chō, Choromatsu in Mr. Osomatsu, Akashi Seijuro in Kuroko's Basketball, Yuzuru Otonashi in Angel Beats!, Yato in Noragami, Ranpo Edogawa in Bungo Stray Dogs, Nozomu Itoshiki in Sayonara, Zetsubou-Sensei, Sōma in Working!
!, Juli in Brothers Conflict, Balder Hringhorni in Kamigami no Asobi, Tieria Erde in Mobile Suit Gundam 00, Saiki Kusuo in The Disastrous Life of Saiki K. and Kinshirō Kusatsu in Cute High Earth Defense Club LOVE!.
In July 2016, the tabloid magazine Flash published a photo of Kamiya holding a child, alleging that he had been married to manga artist Hikaru Nakamura for an undetermined amount of time.
[5] On July 17, 2016, during the 484th episode of Dear Girl: Stories, Kamiya confirmed himself in the photo but did not directly address the marriage allegations, stating that he wanted to keep his personal life private.