Rockoon was a Kawai brand made in Japan the late 1980s early 1990s.They typically had Schaller hardware and are often branded "Schaller Rockoon". According to the Kawai Rockoon 1992 catalog:

"Rockoon is a high performance guitar created by the skilled and uncompromised crafstmanship of KAWAI. We have always been innovating the ideas and designs to continue our tradition of making high quality musical instruments of the finest material for progressive players. Our advanced domestic manufacturing facility allows such concept alive and remains the same as the solid foundation of our creativity.

We keep the musicians' needs in mind, it will be the innovative impulse which makes ROCKOON continue to grow."

Source: Kawai Rockoon catalog. 1992