Subgroups

Since debut, SM Entertainment has created four subgroups for Super Junior. Every member was put into different sub groups, Kibum being the only member not involved in any sub group activities due to his busy acting schedule. The intentions of the subgroups were part of SM's strategy to not limit Super Junior's activities,[92] and the goal was to show that the group could accommodate different musical genres. However, this strategy was later challenged by critics, as it has influenced an overwhelming amount of music groups to create official and unofficial subgroups alike.[93] SM announced that Super Junior will form more subgroups in the future, and possible focuses of these subgroups include a variety of genres such as rock and hip hop.[94] Previous Super Junior subgroups will also return to the industry along with appearances of new subgroups. [94]

Super Junior-K.R.Y

Super Junior-K.R.Y, established in November 2006, is a trio formed by Kyuhyun, Ryeowook, and Yesung. The company discovered that these three members developed a particular persona and subsequent fan-base that was separate from the rest of the group, and how they also had similar musical qualities. They therefore grouped these three members together to perform particular songs to target a more mature audience. Being amongst the most vocally powerful members of the group, Super Junior-K.R.Y are credited to singing mournful, R&B-style ballads, a style that has proven very popular in recent years although stagnation in the style's development is causing it to lose its once fresh evocative power.

Super Junior-K.R.Y's first official performance was on November 5, 2006 on KBS's Music Bank, performing "The One I Love (한 사람만을)."[95] They have participated in the original soundtrack of the tvN drama Hyena with a total of three tracks, including the main theme. The trio also contributed tracks in two additional original soundtracks, one track in both the soundtracks of Snow Flower and Billy Jean Look at Me. Unlike Super Junior's other sub-units, Super Junior-K.R.Y has not officially released a single or album, and only participated in collaboration albums and original soundtracks. However, a new album is expected from K.R.Y in the future.[94]

Super Junior-T
Super Junior-M
Super Junior-Happy