Turbo will officially make their comeback on Dec. 21.

On Wednesday, Dec. 3, "Running Man" star and original Turbo member Kim Jong Kook revealed on his official fan page that he, Kim Jung Nam and Mikey will be going back on stage with a new song and album.

Kim Jong Kook revealed that he had to think about the group's image and the success before announcing Turbo's comeback.

"I had to think about this for a long time," said Kim Jong Kook, as reported by K-Pop Herald. "I was worried that there might be a chance of us damaging the memories of the past of being happy and successful."

Kim Jong Kook told fans that they will do what Tubro do best, release a song that shows why they are labeled "dance music's scary kids."

The singer and variety show star also revealed that Turbo will work with well known producer Duble Sidekick for their comeback this month. The album will be meaningful because it will also celebrate Turbo's 20th debut anniversary.

Turbo made their debut in August 1995, and released album titled 280 km/h speed. Their debut track was titled "My Childhood Dream."