Toshiki Watanabe is a Japanese voice actor from Tokyo, born on September 8, though his birth year has not been publicly disclosed. He is affiliated with the talent agency Aksent. Watanabe is a graduate of both KTC Chuo High School, which has since been renamed Oozora High School, and the Video Technology Academy, a broadcasting and voice acting school.

Watanabe began his voice acting career in the 2010s, inspired by his appreciation for Disney films. His early anime television roles included an officer named Okahiki in a 2018 episode of the long-running series Gintama and an examiner in the Baki franchise the same year. Over the following years, he built a portfolio of supporting and guest roles across a wide variety of popular anime. Notable appearances from this period include a senior player in Cinderella Nine, a character named Leicester in an episode of Layton Mystery Detective Agency, and an auctioneer in Lupin the Third Part 6.

One of Watanabe’s most recognized roles came in 2024 when he was cast as Edgar Redmond, a student at Weston College, in the anime series Black Butler: Public School Arc. That same year, he voiced a waiter in the medical fantasy series Doctor Elise. His other anime credits include parts in Summer Time Rendering, where he played Toru Ajiro and an islander, as well as portraying a villager in The Seven Deadly Sins: Four Knights of the Apocalypse. Watanabe’s voice work also extends to animated films, with roles in the historical drama Peacemaker Kurogane and the yakuza film Twittering Birds Never Fly: The Clouds Gather. In the realm of video games, he contributed the voice for the character Shao Yan in the mobile title The Seven Deadly Sins: Grand Cross and has been cast in upcoming major releases such as Monster Hunter Wilds.

Beyond Japanese animation, Watanabe has an extensive career dubbing foreign films and television series into Japanese. He has provided the Japanese voice for characters played by actors such as Kevin Costner and Robbie Amell. His notable dubbing work includes roles in the series Upload as Nathan Brown, Vikings as Bjorn, and Sex Education as Adam Groff. He has also dubbed characters in films like Godzilla: King of the Monsters and Little Women. His hobbies include singing karaoke and collecting action figures, and he also has skills in dancing, making cocktails, and creating latte art.