Yōji Ueda is a veteran Japanese voice actor born on August 7, 1971, in Hyōgo Prefecture, Japan. He is currently affiliated with the talent management firm Amuleto. Ueda began his career in the late 1990s and has built an extensive body of work across anime, video games, and film. Notably, he changed the spelling of his professional name from 上田 陽司 to 上田 燿司 on April 1, 2008, while both readings remain Yōji Ueda.

Ueda's career is marked by a high volume of roles, demonstrating his versatility and consistent presence in the anime industry. He has voiced a wide array of characters, from supporting players to pivotal figures in major franchises. Some of his most internationally recognized roles include the narrator Dekapan in the long-running comedy series Mr. Osomatsu, the dwarf warrior Eisen in the acclaimed fantasy series Frieren: Beyond Journey's End, the explorer Leif Ericson in Vinland Saga, and the hero Robert E. O. Speedwagon in JoJo's Bizarre Adventure. He also voices the hero Ōetsu Nimaiya in Bleach: Thousand-Year Blood War, the mysterious Cap in Sonny Boy, and the antagonist Shinji Yoshimatsu in Lycoris Recoil.

Beyond these prominent roles, Ueda's filmography is remarkably deep, encompassing a vast range of series and character types. The roles provided in the query are all confirmed parts of his career. He has played characters such as Brian-sensei in The Little Lies We All Tell, Bebin in Ranking of Kings, Tetsu Totsumura in Summer Time Rendering, and Stormthunder in Banished from the Hero's Party. His work extends to science fiction with roles like Drive Knight in One Punch Man, Hugh Cunningham in No Guns Life, and Brigg in Sword Art Online: Alicization. He has also appeared in acclaimed dramas such as March Comes in like a lion as Hanaoka and in historical epics like Vinland Saga. His credits include voicing characters in popular films like Mobile Suit Gundam: Cucuruz Doan's Island (Wald Ren) and Batman Ninja (Eian). In the magical girl genre, he voiced Bakenyan in Star Twinkle Precure.

Ueda's work demonstrates recurring collaborations with specific franchises and studios. He has voiced the character Dekapan in multiple installments of the Mr. Osomatsu-san series, including the television anime, films, and spin-offs. Similarly, he has taken on roles in various Gundam productions, such as Ken Matsumura in Gundam Build Divers Re:RISE and Kenanji Avery in Mobile Suit Gundam: The Witch from Mercury. His career also includes work in tokusatsu, with appearances in Kamen Rider Gaim and Uchu Sentai Kyuranger. In the realm of video games, he has voiced Robert E.O. Speedwagon in several JoJo's Bizarre Adventure games and has roles in major titles like Street Fighter 6 and 13 Sentinels: Aegis Rim.

A notable achievement in Ueda's career is his consistent ability to bring depth and nuance to a broad spectrum of characters, from heroic figures to villains and comedic roles. His portrayal of Eisen in Frieren: Beyond Journey's End has been particularly well-received, bringing warmth and gravitas to the role of a seasoned warrior. With a career spanning over two decades and continuing to take on new roles in prominent series such as Oshi no Ko and The Darwin Incident in 2026, Yōji Ueda remains a significant and active figure in the Japanese voice acting industry.