SungWon Cho

Cho was born to South Korean parents in Rochester, Minnesota, on December 9, 1990,^[3][4] and later moved to DeWitt, Michigan.^[5] He started voice acting in high school when he voiced different characters on a friend's radio plays.^[6] He attended Michigan State University, where he frequently acted in live performances and graduated in 2012 with a Bachelor of Science degree in Media Information and Technology.^[6][7][8] In 2012, after graduating, he described himself as being "in a creative rut" and taught English as a second language to Korean immigrant students.^[9]

In October 2012, Cho began daily posting voice content to Tumblr, building an audience and eventually going viral with a video of him singing "Let It Go" from Frozen while approximating the voice of Goofy.^[9] His first foray into professional voice acting occurred when voice director Deven Mack saw one of his YouTube videos and had him audition for Apotheon, where he ended up securing the role of the main villain Zeus.^[10] He remained active on Vine until the 2016 announcement of their shutdown and was also a finalist for the 9th Shorty Awards for Vine of the Year.^[11][12] Cho shifted his focus to his YouTube channel, his audience following from Vine and having his work often appear on the frontpage of Reddit.^[13][14]

Cho's presence on YouTube grew throughout this time with his channel exceeding 3.75 million subscribers and most of his income between voice acting work coming from sponsorships and ad revenue.^[15] His videos are intentionally low-budget and often feature recurring universes with their own casts of characters, including an anime parody ("The Tomoko Chairem Anime Canon") and a role-playing game parody ("King Dragon"), through which he pokes fun at common gaming and anime cliches and tropes.^[15] He continued to expand these existing storylines that had originally started on Vine, as well as creating a Let's Play channel Press Buttons n Talk with his friend Alex Mankin.^[15][16] In 2019, Cho voiced the character FL4K in the video game Borderlands 3.^[17] He is a frequent guest at conventions and presenting for the Crunchyroll Anime Awards.^[18][19] In 2021, Cho began a new Let's Play channel ProZD Plays Games with his friend and video editor, Jay Choi. The channel has now reached over 100,000 subscribers and Choi has transitioned as full-time editor for both of Cho's YouTube channels while being succeeded as co-host by their friend, Steve Yurko.^[20]

In 2017 Cho starred in his first live action role as the main character, Detective Joe Furuya, in Crunchyroll's Anime Crimes Division, for which he was nominated for Best Acting in a Comedy for the 8th Streamy Awards.^[21][22] In mid-2018 Creative Artists Agency reached out and signed him coinciding with an already planned move to Los Angeles to continue his career as a voice actor.^[23][24] Soon after he was cast in the multi-ethnic Rooster Teeth series Gen:Lock and told NewsWeek's Phillip Martinez, "Voice acting gives me a lot more freedom because I'm not limited by my physical appearance. I can voice all different sorts of characters."^[25] In 2023, Cho made his live-action film debut, playing a supporting role in BlackBerry.^[26] He voiced Orville Park in Knights of Guinevere, an independent animated series co-created by Dana Terrace, John Bailey Owen, and Zach Marcus, which released its pilot episode on September 19, 2025.^[27]

In October 2015, Cho became engaged to Anne Marie Salter, a professional illustrator he met through an online Super Mario fan fiction community.^[9] They married on May 28, 2016.^[28] They have two cats named Effie and Sophie, who are often seen in Cho's videos.^[29]

Cho came up with the username "ProZD" in elementary school, and said that he would not disclose what it means as "it's so embarrassing that even my wife doesn't know."^[30] On April 26, 2022, Cho tweeted that he had finally revealed the meaning of the username to his wife after being together for fourteen years.^[31]