Johnny Yong Bosch was born in Kansas City, Missouri, of an American father and a South Korean mother. He developed an interest in martial arts and sports.
Bosch started his career as an actor after winning an audition for the character of Adam Park (aka the Black Power Ranger) in the Power Rangers series. Bosch then started his career as a voice actor in the Trigun series, voicing the protagonist Vash. Over the years, Bosch accumulated a large number of roles voicing characters in video games and anime dubs.
Bosch also has a music career and provides vocal, songwriting and guitar in his band, "Eyeshine". His band gave their final performance at Yama-Con in December 2017.