Masanori Mark Christianson (born Masanori Hakuta Shirota, January 18, 1976 in Tokyo, Japan) is a Japanese-Korean-American musician, creative director, and visual artist. He may be best known as a bass guitarist and multi-instrumentalist for the Oakland, California indie rock bands Rogue Wave, The Heavenly States, and Release The Sunbird. Masanori, also an award winning advertising art director, designer, and copywriter, has worked for clients ranging from the Target Corporation to the Tiger Woods Foundation.