[4] In January 2020, "Babymonster", one of many names initially considered for Blackpink,[5] and "Baemon" (a syllabic abbreviation of the former) were trademarked in English and Korean by the label and tentatively used by media outlets until the eventual disclosure of their official uses.

[13] Ahyeon, Ruka, Chiquita, Rami, and Pharita were selected by the label, while Rora and Asa were contemplated to be placed into two different projects before ultimately joining the final line-up as the "fans' choice".

[25] The seven members were revealed to the public through the gradual releases of live performance videos starting on January 12,[6] (in order: Rami, Ahyeon, Chiquita, Asa, Rora, Pharita, and Ruka).

[32] Label-mates Lee Chan-hyuk of AKMU and Choi Hyun-suk of Treasure contributed in penning the piece, while its member Asa, worked on both its music and lyrics.

[42] Initially released to lukewarm reception,[43] "Sheesh" experienced a surge in popularity through its live performances,[43] peaking at number ten on the Circle Digital Chart.

[44] It became the highest-charting K-pop girl group entry on Spotify that year,[45] debuting at sixty-ninth place on the Daily Top Songs Global Chart with 1.76 million streams.

[47] In tandem with their EP, the septet embarked on their inaugural fan meeting tour in May, covering six Asian regions: Singapore, Japan, Thailand, Taiwan, Indonesia, and South Korea.

[55] The titular single of the same name, recorded a new personal best, peaking at number 30 on the Billboard Global 200,[56] and acquired belated popularity in Korea and Japan, following the virality of their live performance videos on SBS Gayo Daejeon and The First Take, respectively.

[57] On January 25–26, 2025, Babymonster held a two-day concert at KSPO Dome in Seoul, the onset to their first world tour "Hello Monsters"; the event drew an audience of approximately 20,000 attendees.

[69] Additionally, the ensemble is proficient in multiple languages, including Korean, English, Japanese, Thai, and Chinese, which allows them to connect with a diverse global audience, solidifying their reputation as a multi-national group.

[73] Known for their "stage presence" and "musical prowess",[39] Babymonster cites their role models as fellow YG Entertainment artists,[74] drawing particular inspiration from Blackpink and 2NE1.

[63] In February 2024, Babymonster became presenters for Pepsi in the Asia-Pacific region,[75] and the face of LG Household & Health Care's cosmeceutical brand CNP Laboratory,[76] to help expand their Generation MZ customer base.