No, Key was never called transgender, only gay. There are many idols who have their name connected with the words gay and/or transgender and Key is not among these. I'm not denying the possibility that Key is gay, but for me it's very unlikely that he is the idol of this blind item. However, I must be honest, I think if Key is gay he came out with his group and his friends long ago. He doesn't seem to have trouble dealing with homosexual themes (he spoke without problems on tv of gossip about his friendship with Woohyun and he wears LGBT rings) and doesn't look like a person who tries to hide himself. Taemin and Sungjong struggle against prejudices and gossip while Key (or Heechul) do whatever they want without any problems. I think Key has clarified his situation a looong time ago, I would be really really surprised if he had waited nearly 10 years.