SHINee won first place on 'M! Countdown' this week and decided to turn Key pretty much into the Joker during their encore performance as it was Halloween.

SEE ALSO: SHINee Releases Announcement Poster for Encore Concert

After thanking everyone for the victory, they played rock, paper, scissors.  Key ultimately lost so the other members drew on his face with lipstick during the encore stage for both a humorous and slightly scary look.  Regardless, Key kept singing, once in a while saying things like, "What is this?!", which made the other members laugh. They were clearly having fun!

Check out the videos to see the mischievous SHINee members, including poor Key as he slowly transforms into the Joker for Halloween.  Congratulations on the win!