Ha Seongyong is a South Korean voice actor born on December 12, 1972, known for his work in the Korean dubbing of various animated series and films. His career encompasses a range of roles in anime, Western animation, and video games.

Among his notable voice roles in anime is Tenka Koganei in the television series Sumomomo Momomo - Chijō Saikyō no Yome. He also voiced the Genie of the lamp in the EBS version of the series Time Quest!. Ha Seongyong has performed in multiple installments of the Aria franchise, providing the voice for the character Udo Woody Ayanokohji the 51st in Aria the Animation, Aria the Natural, and Aria the Origination. His other anime credits include Jean Donnadeiu in both Nodame Cantabile: Paris and Nodame Cantabile: Finale, as well as Kousei Shimazaki in Please Twins!. He also voiced Azuma Yunoki in La Corda D'Oro - primo passo, Kunio Tanaka in Hataraki Man, and Tony Kimura in Project Blue Earth SOS.

In addition to his work on Japanese anime, Ha Seongyong has lent his voice to numerous Korean dubs of Western productions. These roles include Wasabi in the film Big Hero 6, Him in The Powerpuff Girls, General Scar in The Grim Adventures of Billy & Mandy, and Chief Quimby in Inspector Gadget. He also voiced the character Spike in Tom and Jerry and took on multiple roles in the animated series Transformers Prime, including Ratchet, General Bryce, and Vogel. His voice acting extends to the Korean animation industry as well, such as his role as Paragon in the series Tobot Galaxy Detectives.

Ha Seongyong's portfolio also includes work in video games. He provided the Korean voice for Tusk in Dota 2 and for the Terran Herc in StarCraft II, as well as the Japanese voice for the Terran Cyclone in the same game.