Ken'ichi Matsuyama(松山 ケンイチMatsuyama Kenichi, born Kenichi Matsuyama (松山 研一), 5 March 1985 in Mutsu, Aomori Prefecture) is a Japanese actor. He is known for his affinity for strange character roles. He is best known for playing L in the 2006 films Death Note, Death Note: The Last Name and L: Change the World in 2008, as well as voicing Gelus in the Death Note animated adaptation. He has recently performed in the dual role of Soichi Negishi/Johannes Krauser II in the film adaptation of Detroit Metal City, and will be starring in Kamui Gaiden (September 2009 in Japan).