Groups 4minute, BEAST and G.NA made an appearance in BTOB's "Thriller" comeback trailer to support them.

BTOB, who will be releasing heir new song, "Thriller," on September 9, revealed a teaser video online to announce their comeback.

In the video, many other senior artists show their support for BTOB before showing a bit of their new album concept.

They will be making their comeback performance on September 4.