Rikiji Masuda (増田 力司 Masuda Rikiji, born January 11, 1971 in Saitama, Japan) is a Japanese musician and bassist. He is known for his work with Oblivion Dust and Mega8Ball.
His musical career started as the bassist of Three Eyes Jack from 1993 to 1995, under the nickname "ChaChaMaru" (ちゃちゃ丸).[1] In fall 1995 Rikiji formed Mega8Ball with vocalist/guitarist Tetsu Takano. The band later disbanded and had their last live on December 29, 1997.
In January 1998, almost immediately after, Rikiji joined Oblivion Dust.[2] Then on December 23, 2000 he left Oblivion Dust (who would later disband on September 23, 2001). In early 2001 Rikiji reformed Mega8Ball, being the only original member.[3]