Ken the 390
, AKA Ken the 390 ("Ken za Sankyūmaru"), is a Japanese hip hop and R&B singer/rapper and voice actor who is an artist of the Rhythm Zone label owned by the Avex Group. Life and career. In 1999, Ken the 390 helped in founding the label that helped the Japanese hip hop industry to rise. His debut solo album, "Prologue", was released in Japan on March 25, 2006. The latest album with a title name of "Fantastic World" was released on October 8, 2008.