Led by Kevin Abstract and formed partially through the online music discussion forum KanyeToThe, the group's final line-up consisted of vocalists Abstract, Matt Champion, Merlyn Wood, and Dom McLennon, vocalists/producers Joba, Bearface, and Jabari Manwa and producers Romil Hemnani and Kiko Merley, as well as graphic designer Henock "HK" Sileshi, photographer Ashlan Grey, web designer Roberto Ontenient (who also featured prominently in voice skits), and manager Jon Nunes.

[10] In 2009, Abstract at 13 years old made a post[11] on the KanyeLive online forum (now known as KanyeToThe) asking if anyone wanted to form a band, to which over 30 users responded.

[12] In January 2015, Brockhampton released their debut single, "Bet I", accompanied by a video directed by member Henock "HK" Sileshi and Franklin Mendez.

[19] That same month, Brockhampton won the VFiles Loud contest, winning them a professionally directed music video for their next single, "Dirt", released through Fool's Gold Records.

The project focuses on highlighting the group's individual members, and was led by the music video "Flip Mo", performed by Merlyn Wood and featuring Dom McLennon.

[41] On December 14, 2017, Brockhampton announced their fourth studio album, Team Effort, slated for release in 2018, along with a new single from Saturation III, "Stains".

[44] The group also filmed a self-funded, self-made feature-length movie to celebrate the Saturation trilogy, directed by Kevin Abstract himself.

In light of controversy, the group canceled the remainder of their tour dates, including an appearance at the Governors Ball Music Festival.

[55] On June 20, the band appeared on The Tonight Show Starring Jimmy Fallon, in their late-night television debut, and their first performance since announcing Vann's departure.

[56] They debuted the track "Tonya", accompanied by guest vocalists Jazmine Sullivan, Ryan Beatty and Serpentwithfeet, as well as revealing the new title of their upcoming album, The Best Years of Our Lives.

[57] Following the performance the band resumed their summer tour, headlining the Agenda Festival in Long Beach, California.

[59] The show's first episode was aired on July 6, 2018, featuring the debut of single "1999 Wildfire", released that day with an accompanying music video.

Later that day the song was featured on the third episode of Things We Lost in the Fire Radio, alongside the unfinished track "Don't Be Famous".

[62] On August 26, 2018, the group announced that a new album titled Iridescence, recorded over ten days in Abbey Road Studios, would be released in September.

[65] The band also announced dates of their I'll Be There Tour, which began on October 3, 2018, in Mesa, Arizona, concluding on December 6, 2018, in Las Vegas, Nevada.

[68] In April 2019, during the press cycle for Abstract's solo album Arizona Baby, he teased the existence of a new Brockhampton record.

On August 26, the band announced via Instagram and Twitter they would begin their Heaven Belongs to You Tour, with openers Slowthai and 100 gecs,[75] from October to December 2019 in support of the new album.

[76] The band made its first appearance on The Ellen DeGeneres Show on September 6, 2019, performing "Sugar" and "Boy Bye", though the latter was not televised.

[77] The group was a guest on The Tonight Show Starring Jimmy Fallon, where they were interviewed and then performed "Sugar" with Ryan Beatty on October 24.

[82] In late April 2020, following the coronavirus pandemic, the band began releasing non-studio produced singles under the title Technical Difficulties Radio to their YouTube channel.

The tracks "N.S.T", "things cant stay the same", "M.O.B", "Twisted", "I.F.L", "Baby Bull", "Downside", "Fishbone" & "Chain On / Hold Me" were released to YouTube and later taken down.

[90] On March 24, 2021, the band released "Buzzcut", featuring Danny Brown, followed by an announcement of the albums full title, Roadrunner: New Light, New Machine.

[97] On January 14, 2022, the band announced on their social media accounts that they would be taking an indefinite hiatus at the conclusion of their performance at Coachella.

[105][106][107][108][109][110] Complex magazine describes the group as "gay, black, white, DIY, ambitious, all-inclusive, and would-be pop stars," and this diversity is what largely distinguishes their lyrics and sound.