- Sung Kyu (Leader, Main Vocals)
- Dong Woo (Main Rapper)
- Woo Hyun (Main Vocals)
- Hoya (Rapper, Vocals, Main Dancer)
- Sung Yeol (Vocals)
- L (Vocals, Visual)
- Sung Jong (Vocals)
Infinite was first introduced before their debut by Epik High member Tablo's official Twitter, as the Hip-Hop group helped with the production of Infinite's debut mini-album First Invasion, and later through their own TV-show Infinite! You Are My Oppa!!.
Two months after the release of their debut mini-album, the song "She's Back" was released as a digital re-cut single including a remix of the song. In early 2011, Infinite released their second mini-album Evolution.
Only a few days after their second mini-album release, the group debuted in Japan with the release of a rental only single "TO-RA-WA". The single included their Korean debut song, "Dasi Dorawa", however, it was re-titled for the Japanese release. A second rental only single was released on February 2011, "She's Back".
One month later, on March 17, the group released their first Korean single "INSPIRIT", which included two new songs and a remix. Only one day earlier, on March 16, Infinite also released their third Japanese rental-only single "BTD (Before the Dawn)", which featured their second mini-album's, Evolution, lead track.
Infinite released their first full-length album Over the Top on July 21st with "Be Mine" being their lead song. The group had their first music program win on September 1st on Mnet M Countdown. They released a repackaged album titled PARADISE on September 26th along with the music video.
They made their official Japanese debut with a Japanese rendition of their hit song "BTD" on November 19.
Infinite had their first solo live concert in Seoul titled Second Invasion on February 11th and 12th of 2012 at the South Korea Olympic Park Handball Arena. Due to their rising popularity in Japan, they hosted Second Invasion in Japan on February 25th and 26th at the Tokyo International Forum. Tickets to their Korean and Japanese concerts were sold out under ten minutes. Due to the popular demand of their successful concert, INFINITE held an encore concert on April 1st titled Second Invasion Evolution. Tickets were also sold out immediately.
The group made their Korean comeback with their third mini-album, Infinitize and its title song, "Chugyeokja" in May 2012, achieving six consecutive #1's on various music programs. Right after promotion, they started yet another concert series titled That Summer Concert 2012 starting from August 8 to August 12. They held their first Japanese Arena tour from October to November in eight different cities.
Towards the second half the year, Infinite members started solo and sub-unit activities. Member Hoya made his acting debut in Reply 1997 drama, Woo Hyun and Sung Kyu in The Thousandth Man, and L participated in What is Mom?. In November, leader Sung Kyu debuted as a solo artist with a rock-themed mini-album titled Another Me. Hip-Hop sub-unit INFINITE H, consisting of members Dong Woo and Hoya, released their long-anticipated mini-album FLY HIGH in January 2013.
Infinite released their 4th mini album in March 2013 and came back with their title song "Man in Love." It was announced in April 2013 that Infinite will be releasing their first full-length Japanese album, Koi ni Ochiru Toki in June. On their 3rd anniversary, they announced that they will embark on their first world tour, One Great Step, stopping by over 20 cities in not only the Asian regions but Europe and the Americas as well.The group made a comeback with their 2nd single album Destiny in July 2013. They became the first Korean idol group to release a instrumental-only album THE ORIGIN in April 2014.
- Official Fanclub: Inspirit
- Official Color: Pearl Metal Gold
- [2011.07.21] Over the Top
- [2011.09.26] PARADISE (Repackage)
- [2014.05.21] Season 2
- [2014.07.22] BE BACK (Repackage)
- [2010.06.09] First Invasion
- [2011.01.06] Evolution
- [2012.05.15] Infinitize
- [2013.03.21] New Challenge
- [2014.04.10] THE ORIGIN (Instrumental)
- [2010.08.04] She's Back
- [2011.05.09] Can U Smile
- [2011.12.06] Hayan Gobaek (Lately) (하얀 고백)
- [2012.02.24] Second Invasion
- [2012.05.08] Nunmulman (눈물만)
- [2012.10.08] What Is Mom? OST Part. 1 (엄마가 뭐길래)
- [2013.09.27] GALAXY Music
- [2012.06.29] Infinitize Showcase
- [2012.08.20] INFINITE [SECOND INVASION] 1ST CONCERT LIVE IN SEOUL
- [2012.12.28] Infinite Concert: Second Invasion Evolution
- [2013.04.30] Infinite "That Summer" Concert
- [2013.10.21] Destiny in America
- [2013.12.26] Infinite IDEA
- [2013.06.05] Koi ni Ochiru Toki (恋に落ちるとき)
- [2011.11.19] BTD
- [2012.04.18] Be Mine
- [2012.08.29] She's Back
- [2014.07.02] Last Romeo ~Kimi ga Ireba Ii~ (Last Romeo ～君がいればいい～)
- [2011.01.26] TO-RA-WA
- [2011.02.23] She's Back
- [2011.03.16] BTD (Before the Dawn)
- [2011.04.30] Nothing's Over
- [2012.02.29] INFINITE JAPAN 1ST LIVE「LEAPING OVER」DVD
- [2012.07.24] Infinite 3rd Mini Album Showcase Special DVD 「The Mission」
- [2012.08.08] Infinite's Sesame Player DVD Box
- [2012.09.05] 2012 INFINITE CONCERT「SECOND INVASION」in JAPAN
- [2013.04.24] Infinite Ranking King
- [2013.10.18] Infinite Destiny in American Production DVD
- [2013.10.30] 「INFINITE 1ST ARENA TOUR IN JAPAN」
-  Infinite! You Are My Oppa!!
-  Mnet Japan Days of Infinite
-  Mnet Wide Sesame Player Season 2
-  Birth of a Family
-  Ranking King
-  This Is INFINITE
- [2010.12.15] 18th Korean Culture Entertainment Awards: New Generation Popular Music Teen Singer Award
- [2011.10.09] SBS Inkigayo Mutizen - Paradise
- [2011.10.13] Mnet M Countdown #1 - Paradise
- [2012.01.11] 26th Golden Disk Awards: Disk Bonsang, Hallyu Icon Award
- [2012.02.29] Korean Music Awards - Netizen-Picked Best Group
- [2012.12.14] 2012 MelOn Music Awards - Top 10 Artists
- [2013.01.15] 27th Golden Disk Awards - Disk Bonsang, Best Group Performance Award
- [2013.03.07] 13th Korean National Assembly Awards - Popular Music of the Year
- [2013.07.05] KBS Music Bank K-Pop Best 7 - #6 "Man In Love (Namjaga Saranghalttae)"
- [2013.07.18] 2013 Mnet 20's Choice - Best Global Touring Artist Award
- [2013.11.22] 2013 Mnet Asian Music Awards - Sony MDR Worldwide Performer
- [2013.11.22] 2013 Mnet Asian Music Awards - Best Male Group
- [2014.01.16] 28th Golden Disk Awards - Disk Bonsang - "New Challenge"
- [2014.01.23] 23rd Seoul Music Awards - Bonsang Award - "Destiny"
TV Music Shows
- [2011.09.01] Mnet M Countdown #1
- [2011.09.08] Mnet M Countdown #1
- [2012.05.31] Mnet M Countdown #1
- [2012.06.01] KBS Music Bank #1
- [2012.06.03] SBS Inkigayo #1
- [2012.06.04] MBC Show Champion #1
- [2012.06.07] Mnet M Countdown #1
- [2012.06.10] SBS Inkigayo #1
- [2012.06.14] Mnet M Countdown #1
- [2013.03.31] SBS Inkigayo #1
- [2013.04.03] MBC Show Champion #1
- [2013.04.04] Mnet M Countdown #1
- [2013.04.05] KBS Music Bank #1
- [2013.04.07] SBS Inkigayo #1
- [2013.04.12] KBS Music Bank #1
- [2013.04.20] MBC Music Core #1
- [2013.07.25] Mnet M Countdown #1
- [2013.07.27] MBC Music Core #1
- [2013.07.28] SBS Inkigayo #1
- [2013.07.31] MBC Show Champion #1
- [2014.05.28] MBC Show Champion #1
- [2014.05.29] Mnet M Countdown #1
- [2014.05.30] KBS Music Bank #1
- [2014.06.04] MBC Show Champion #1
- [2014.06.05] Mnet M Countdown #1
- [2014.06.13] KBS Music Bank #1
- [2014.08.02] MBC Music Core #1