2012–2013 : Debut with "Who's That Girl" and new member The group released their digital single and music video for 'Who's That Girl' on October 4, 2012 and started promotion on October 5 on music program
Music Bank. A few days on October 12 the dance practice video for 'Who's That Girl' was released. On January 20, 2013 on the official YouTube page a teaser was released for the group's second single 'Highway'. The single and music video for the song was released on the 24th. "Highway" is produced by Brian Kierulf &
Joshua Michael Schwartz, the same producers who created the group’s debut track "Who’s That Girl". They started their comeback promotions on
M! Countdown the same day. On June 25 the group updated their official fan cafe with a teaser photo. In addition to photos of the members, the teaser announced that Mr.Mr will pre-release its title song on July 5 followed by first mini-album release on the 8th. On June 30 the first teaser for the group title song 'Waiting For You' was released. The music video was released on the 4th of July, 2013 the mini album for their first mini album was released on the 5th. On November 8, 2013, it was announced that new member, Hon, would be joining the group as the sixth member. A music video teaser for Hon was released on their official YouTube account revealing that the group will be making a comeback with their 3rd digital single on November 8, 2013. On November 5, 2013 the album jacket photos of each members along with a group photo were released. On November 6, the second teaser for their comeback was released for their third single 'Do You Feel Me' the song and music video were released on 8 November 2013 they starting comeback promotion of the single the following day on music program
Music Bank. On December 7, 2013 the group released their first episode of their reality show 'MMTV'.
2014 : ''Mr.Mr., It's You, and Big Man'' Despite Hon's controversy, the group released a self-titled single on February 28, 2014. The group released their newest single 'It's You' on April 25. The song is dedicated to all fans who stuck together with them. The music video for this song was released on May 7. It was announced the group would be making their return with a new single
Big Man by releasing both a group photo and a teaser for the music video. The music video for the single was released on May 16 also the single release. They started promotions for this song on
Show! Music Core on May 17. On June 17, it was confirmed that member Changjae would be starring the idol-turned-actors drama
High School: Love On alongside
Infinite members
Nam Woo-hyun and
Sungyeol with child actress
Kim Sae-ron. His agency stated "Changjae completed his first filming last week. He has been consistently practicing acting and is working hard. He plans to continue with his acting career. Please look forward to him."
2015 : Ryu's lawsuit and leaving the group and comeback in April with new members On March 4, the agency released a statement regarding Ryu leaving the group in a fan cafe without stating the reason for his leave. A few days later, Ryu himself saw the statement and was deeply shocked by it. He has taken to Twitter to address certain complaints including his unfair treatment, physical and verbal abuse which he had received while still being in the group. Since then, both parties have been exchanging responses and Ryu has officially filed a lawsuit against his agency's CEO. Following his leave, MR.MR will continue on as a four-member group. Ryu is the third member to leave the group as of 2015. Following the controversy of Ryu‘s leave from the group, MR.MR announced their comeback plans for April with two new members join them, Sanghyun and Jaemin.
2016-2021 : Jin's absence, The Unit, and Disbandment Following Japanese promotions for
Just 1 Light in February 2016, Jin became absent from promotions for their next release
ROCK THIS WØRLD in August of that same year, and
GOOD TO BE BAD in November, though no formal reason or statement has been given for his departure. On September 4, 2017, it was announced that MR.MR would be taking part in idol reboot show
The Unit, a competition series on KBS that "aims to shine a spotlight on artists who have already debuted but failed to find mainstream success". The show will create two 10-member unit groups, male and female, with the final groups promoting for seven months. "The Unit" will begin airing in late October. On "Showterview with Jessie" it was confirmed by member Doyeon that Mr.Mr had disbanded and he was currently working as a manager for
Hong Seok-cheon. == Controversy ==