Renato Tribuzy began his career in the early age of 12 in an Iron Maiden cover band. Four years later he and a few friends started a band called Horizon, when he was 16 years old. The band was quite successful and well known, counting on with a legion of fans. They were the first metal band in Rio de Janeiro to receive the support of a small record company. Later on, after the band broke up, Tribuzy started a new band, in 1997, named Thoten. In the same year the band released a demo.