Eriksen grew up in Stovner bydel, a low income neighborhood in Oslo. He dropped out of school as a teenager and started making music and painting graffiti with his friends. In 1995 his first album with the band Warlocks was released. Together with his brother Kevin Eriksen and friend Håkon Lund they became spokesmen for the controversial Norwegian graffiti community. In 1997 he won the Norwegian break dance championships, both solo and with the crew Atomic B-Boys.
Eriksen is best known as one of the lead vocalists in the Norwegian rap group Warlocks, which had commercial success in Scandinavia in the 1990's. His stage name is Tech Rock. He is considered a pioneer of Norwegian hip hop. He is known for his roles inn Vikingane and DC's Legends of Tomorrow.