That sounds like the Master Grade kit of the Gundam Master Asia from the G Gundam series. This kit features a highly detailed and articulated Gundam Master Asia, which also comes with its signature weapon, the Master Cloth. The Master Cloth can be attached to the back of the Gundam or used as a whip or grappling hook. The kit also comes with a 1/20 scale unpainted figure of Toho Fuhai (Master Asia), which can be displayed alongside the Gundam. The kit includes a water slide decal sheet for added detail and realism.
