Lee Kwang Soo apologized to TVXQ's fanclub, Cassiopeia, on the latest episode of 'Running Man'.

As part of the defending team, Lee Kwang Soo teamed up with Yunho to hide from the chasing team. Living up to his 'betrayer' theme, however, he soon tricked Yunho into leaving their hideout, where he was promptly captured and his nametag ripped.

Following that incident, he started searching for the mission balls, which contained the nametags of the opposing team. As luck would have it, he discovered one with Changmin's name written on it, meaning that the last surviving TVXQ member would be sent to jail as well.

Since he had become the biggest reason for the ripping of both Yunho and Changmin's nametags, he perceived the hate he would be receiving very soon from their fans.�"I will apologize to TVXQ's fanclub," he said. "I'm sorry, Cassiopeia."

"Is it really Kwang Soo hyung?", Changmin said, unable to believe that the 'giraffe' had gotten him out. Check out the full episode below!