Takashi Hatakeyama, born June 18, 1976, better known by his stage name Kreva, is a Japanese rapper and record producer signed with the Burger Inn Records and Pony Canyon's Knife Edge labels. He is a solo artist as well as a member of various hip hop groups, including Kick the Can Crew, By Phar the Dopest with fellow MC Cuezero, and a large ensemble of other Japanese hip hop groups in Funky Grammar Unit.His stage name is derived from the English word "clever".