Hwan-Jin Kim is a seasoned South Korean voice actor, born on October 3, 1952, in Busan, South Korea. He has built an extensive and distinguished career, primarily lending his voice to Korean-language dubs of numerous foreign animated series and films, with a particularly strong presence in anime.

His filmography is marked by a wide array of major roles in globally recognized franchises. He is known for voicing the title character Stitch in the series Stitch!. He also portrayed Tadatos Lane in the film They Were 11 and took on the role of Locke in Locke the Superman. In the fantasy genre, he voiced the young prince Arslan in the original video animation of The Heroic Legend of Arslan and provided the voice for Zari in The Brave Frog.

Kim's career is characterized by frequent work across some of the most popular and long-running anime series. He is notably recognized for his long association with the Dragon Ball franchise, having voiced the protagonist Son Goku in multiple iterations, including Dragon Ball Z, Dragon Ball GT, and Dragon Ball Z Kai, as well as the films Dragon Ball Z: Battle of Gods and Dragon Ball Z: Resurrection 'F'. His role as Goku also saw him voicing the character for the character's father, Nobita, in a Doraemon film. His repertoire includes a significant number of leading and supporting characters in classic series, such as Ryoji Kaji in Neon Genesis Evangelion, Captain Kuro in One Piece, and multiple characters in Mobile Fighter G Gundam.

A notable aspect of his career is a recurring collaboration with the director and storyboard artist Kazuhiro Furuhashi. Kim provided the voice for the iconic character Hajime Saitou across various Rurouni Kenshin adaptations, including the original television series, the Trust & Betrayal OAV series, and the motion picture. He also voiced the character Ginkotsu in Inuyasha, another series directed by Furuhashi. Beyond these credits, his voice work extends to characters in Ranma ½ as Tatewaki Kuno, the villainous Dr. Ivo Robotnik in the Korean dub of the live-action Sonic the Hedgehog film, and Rattrap in Beast Wars: Transformers, demonstrating his versatility across genres and formats.