Who could be Dream High’s K?

As Dream High is approching to the last episode on 28th Feb, many viewers are curious of who the Superstar K could be? The possibilities could be one of the six main characters, namely; Song Samdong (송삼동) played by Kim Soo Hyun (김수현), Go Hyemi (고혜미) played by Suzy Bae (배수지), Jingook (진국) played by Ok Taecyeon (옥택연), Yoon Baekhee (윤백희) played by Ham Eunjung (함은정), Kim Pil-suk (김필숙) played by IU (아이유) and Jason (제이슨) played by Jang Wooyoung (장우영).