Recently, Big Bang made a guest appearance on MBC TV's "Infinity Challenge" for the show's special episode titled, "Gangs of Seoul". "Gangs of Seoul" is about two teams - Big Bang and the cast of Infinity Challenge (in 'Haru Haru' outfits) - who each receive an order by an unknown authority to meet at a secret meeting place, where they'll be supplied with one weapon for the investigative game. The aim of the game is to use their one and only supplied weapon and think of ways to kill the opposition's top boss. The full episode is set to air this coming May 7th, but until then, check out the teaser below!