Cortis
South Korean boy group
Cortis (Korean: 코르티스; stylized in all caps) is a South Korean boy band formed by BigHit Music in 2025. The group consists of five members: James, Juhoon, Martin, Seonghyeon, and Keonho.
BigHit Music's third group after BTS and Tomorrow X Together, Cortis debuted on August 18, 2025 with the single "What You Want". They later released their first extended play, Color Outside the Lines, which debuted at number 15 on the Billboard 200, the second‑highest entry for a K‑pop act's debut album. The EP also set records for first‑day sales and has surpassed two million in cumulative album sales. Their 2026 single "RedRed" became the group's most commercially successful song for far, reaching number one at the Circle Digital Chart. They have won several accolades at the 10th Asia Artist Awards, 2025 MAMA Awards, and 40th Golden Disc Awards.
Name
The name "Cortis" is derived from six letters taken from the phrase "Color Outside the Lines". According to the band's agency, the name "symbolizes the band's commitment to thinking freely, unconstrained by the norms and expectations set by society." The group announced their fandom name on Weverse as Coer (Korean: 코어, pronounced as "core"), a blend of the group's name and the word "core", intended to signify fans as the group's support.
History
Pre-debut activities and formation
Prior to the formation of Cortis, most of the members had prior experience in entertainment, modeling, or music.
“Cortis” enters the record as south Korean boy group. Crown Archives preserves that source wording while asking what Cortis, South and Korean can confirm, complicate or overturn.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 20, 2026. The linked authority identifier is Q135668928. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2025 and 2026.
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This entry incorporates text from “Cortis” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.