DMTN, formerly Dalmatian, was a South Korean boy band created and managed by MC Mong under Monkey Funch Entertainment. The original lineup consisted of Inati, Day Day, Donglim, Jeesu, Dari, and Daniel. Dalmatian released a 30-second music video teaser of their debut digital single "Round 1" on August 25, 2010. It was followed by the song and video's full release on September 1, 2010 and the group made their debut performance the following day on Mnet's music program M! Countdown.
On May 7, 2012, Dalmatian announced that Day Day left from the group for personal reasons, and member Simon later joined the group. Dari enlisted in the military immediately after promotion for "That Man Opposed" ended in 2011, which resulted in his hiatus from the group. Dalmatian compromised Inati, Jeesu, Daniel, Donglim, and Simon. The group then changed its name to DMTN, following its move to a new label. The group went on hiatus in 2013 following Daniel's marijuana scandal.