In 2014 in their Happiness video, we got clues about possible future member additions what would be fifth member Yeri was one of the girls in the 'tree scene' along with several other trainees from SM Entertainment.
And last year in the group's latest hit, Dumb Dumb, it showed the current members of the group being 'manufactured' and 'assembled' in a factory - kind of similar to Sugababes' Wear My Kiss video. Could this be a clue that a new member is being 'built' and 'prepared' for debut this 2016?
Red Velvet performing Dumb Dumb in the KBS-year-end show.
Notice they use a factory concept once again to 'produce' the girls to the stage.
