Polaroid photos of 4 mysterious members in sexy concept were revealed and fans assumed that the group is gearing for a comeback. However, it was revealed that instead of 7 members, Rainbow is returning with a sub-unit 'Rainbow BLAXX consisting of 4 members.

On January 3, Rainbow's official Facebook account leaves photo teasers of the mysterious four members' seductive body parts like thighs,  bare shoulders, abs and legs raising excitement and curiosity at the same time upon the awaiting fans.

From the teasers, the four members are barely recognized, so Rainbow announced that they will reveal each of them consecutively starting on January 6.

Do you have your own guesses on who would be the members of Rainbow BLAXX? List them down below!