Yeong-Seon Kim is a prominent South Korean voice actor born on December 17, 1969. He began his career in the voice acting industry in 1994 and has been affiliated with the Munhwa Broadcasting Corporation (MBC) since 1996.

He is known for a prolific career dubbing a wide array of roles in animated series, films, and video games for the Korean market. He is the official Korean dubbing voice for actors such as Elijah Wood and Orlando Bloom. One of his most enduring and high-profile roles is that of Kojiro, the Japanese name for the character James, in the Pokémon franchise. He has voiced the character in numerous series including Pokémon: Black and White: Rival Destinies, Pokémon Journeys: The Series, and films such as Pokémon the Movie: Hoopa and the Clash of Ages, Pokémon the Movie: Volcanion and the Mechanical Marvel, and Mewtwo Strikes Back Evolution.

Beyond Pokémon, Kim has lent his voice to many leading characters in popular anime. He is the voice of Light Yagami in Death Note, Sasuke Uchiha in Naruto, and Saitama in One Punch Man. His repertoire also includes Kyo Sohma in Fruits Basket, Battler Ushiromiya in Umineko - When They Cry, and Joe Shimamura in Cyborg 009 The Cyborg Soldier. In film, he has dubbed the roles of Ashitaka in Princess Mononoke, Haku in Spirited Away, and Howl in Howl's Moving Castle.

In addition to animation, Kim is highly active in the video game industry. He is widely recognized by gamers for his role as the character 707 in the popular otome game Mystic Messenger. His other notable game credits include Ciel in Elsword, Zero in Grand Chase, and multiple characters in MapleStory. He has also voiced Noboru Terao in the acclaimed OVA Voices of a Distant Star.