SungWon Cho, also widely known by his online pseudonym ProZD, is an American voice actor and YouTuber who has built a prolific career voicing characters in anime, video games, and animated series. He was born on December 9, 1990, in Minnesota to South Korean parents and was raised in Michigan. His interest in performance began in high school, where he voiced characters in a friend's radio plays. He later graduated from Michigan State University in 2012 with a degree in Media Information and Technology.

Before his professional acting career, Cho built a substantial online following by posting comedic voice content and sketches on platforms like Tumblr and Vine. A viral video of him singing "Let It Go" from Disney's Frozen in the voice of Goofy helped expand his audience. This online presence led to his first professional voice acting role when a voice director discovered his work and had him audition for the video game Apotheon, in which he voiced the main villain, Zeus. He continues to maintain a highly successful YouTube channel under the name ProZD, where he produces comedy skits, snack food reviews, and board game content.

Cho's voice acting career in anime and animation has grown to include a wide array of notable roles. He is known for his work as Kage, the loyal shadowy companion, in the critically acclaimed series Ranking of Kings. He voices Senshi, the dwarf chef, in the fantasy series Delicious in Dungeon and Woo Jinchul in the action series Solo Leveling. His other significant anime and animation credits include Hyodo in Aggretsuko, Shark in Akudama Drive, Kensuke Shibagaki in ODDTAXI, Hiroki Shirakaba in Tokyo 24th Ward, Georg Dalmas in Hortensia Saga, Master Lord Majesty in Radiant, and Sidian in Pokémon Horizons: The Series. In addition to anime, he has voiced prominent characters in major video games such as FL4K in Borderlands 3 and Ratatoskr in God of War Ragnarök.

Throughout his career, Cho has collaborated on various projects with other online creators and animation studios. He frequently works with voice directors and casting agencies in the Los Angeles area, where he is now based. His work has also led to partnerships with major gaming companies. In live-action, he starred as Detective Joe Furuya in the Crunchyroll web series Anime Crimes Division and appeared in the 2023 film BlackBerry.

Cho's performances have earned him recognition within the industry. He was nominated for Best Acting in a Comedy at the 8th Streamy Awards for his role in Anime Crimes Division. He has also received nominations at the Crunchyroll Anime Awards for his voice performances as Kage in Ranking of Kings and as Senshi in Delicious in Dungeon. Earlier in his career, he was a finalist for the Shorty Award for Vine of the Year. He is a frequent guest at anime and entertainment conventions.