MARBLE SHEEP were founded in 1987 by Ken Matsutani (ex WHITE HEAVEN). First the band started its musical activity under the name of MARBLE SHEEP & THE RUN-DOWN SUN'S CHILDREN. The good old MARBLE SHEEP passed through many styles of psychedelia like Minimal Music, Heavy Rock and S.F. Jam Psych as both band and music continued to evolve. After releasing 7 albums, they went on a hiatus in 1994.

After several years of rest, in December 1999, MARBLE SHEEP were born again. With a shortened band name they transformed into a straighter and stronger group with their sound developing into Space Punk Rock. The group is highly esteemed overseas as a fixture of the Japanese rock scene since early times. They started their real overseas activity from 2002, getting overseas record company deals too, and played many live shows in USA and Europe.

In contrast with the long history of the band, MARBLE SHEEP are described as Merry Pranksters of the 21st Century. This can be attributed to the merry and energetic live performances which can flip out even full-grown-ups while taking listeners to the Space World easily. Since 2009, the band's line-up had been:KEN (GUITAR,VOCAL), ZIGEN (GUITAR, CHORUS), BABY (BASS, CHORUS), IWAMOTOR (DRUMS, CHORUS). In 2013, Ken disbanded Marble Sheep.