Hitchhiker (히치하이커) is a South Korean singer, musician, DJ, producer, and composer under SM Entertainment.
He began his career in 1995, under the name Jinu, as a composer for the song "Boogie-Woogie" for Lee Seung Hwan's fourth album Human.
In 1996, he released his first solo album Jinu#Joke.
He then formed the rock band Rollercoaster in 1999, with Lee Sang Soon and Jo Won Sun. He serving as the bassist and programmer.
Following the group's disbandment, he began working as a DJ under the name DJ Jinu before changing to his current stage name, Hitchhiker.