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10 Biggest K-POP Stars Controversies

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K-pop’s global break came bundled with a decade of scandal that nearly took down some of its biggest names.

By the time K-pop groups were selling out arenas outside Korea, the industry back home had already weathered blackmail plots, contract lawsuits, and plagiarism fights that played out in tabloids and courtrooms alike. The video “10 Biggest K-POP Stars Controversies” runs through the cases that actually reshaped rosters and ended careers, not just the tabloid noise. Extortion attempts, “slave contract” lawsuits, and substance busts all forced agencies and fans to confront how the business really operates.

• GLAM’s Dahee (Kim Da-hee) and model Lee Ji-yeon attempted to extort 5 billion KRW (roughly $4.5 million USD) from actor Lee Byung-hun using secretly recorded footage in 2014, a scheme that ended in prison sentences and the immediate disbandment of GLAM.
• Former EXO members Kris, Luhan, and Tao each filed nullification lawsuits against SM Entertainment, challenging what fans and press labeled “slave contracts” governing pay and career control.
• G-Dragon’s 2011 marijuana incident and 2NE1’s Park Bom’s 2010 amphetamine customs case, which surfaced publicly in 2014, became career-halting flashpoints under South Korea’s strict, conservative media rules on drug use.

The Lee Byung-hun Blackmail Plot That Ended GLAM

The most explosive case on the list involves GLAM member Dahee and model Lee Ji-yeon, who used secretly recorded footage of actor Lee Byung-hun to attempt an extortion scheme worth roughly $4.5 million. The demand — 5 billion KRW — was enormous even by celebrity-blackmail standards, and it triggered a criminal case that ended with prison sentences for both women. GLAM, a five-member girl group that had only debuted a few years earlier, was disbanded outright once the scandal broke, wiping out the group’s career in the fallout of a plot that had nothing to do with its music.

A 5 billion KRW extortion attempt against one of Korea’s biggest film stars didn’t just end in prison time — it ended an entire girl group overnight.

Slave Contracts and the EXO Fracture

EXO’s early lineup didn’t survive the group’s own contract terms. Kris, Luhan, and Tao each broke from SM Entertainment and filed lawsuits seeking to nullify their contracts, arguing the terms amounted to “slave contracts” that locked idols into years of restrictive, agency-controlled obligations. The disputes became a rallying point in conversations about how Korean entertainment companies structure pay, image rights, and career decisions for foreign-born idols working under Korean labels, and they permanently altered EXO’s roster.

Similar frustrations echo through some of the messiest boy band breakups on record, where contract disputes and management control turned into public fights that outlasted the groups themselves.

Plagiarism Clouds Over BIGBANG and EXO

Plagiarism allegations hit some of K-pop’s most commercially dominant acts. Tracks from BIGBANG and EXO both drew accusations of lifting musical composition elements from other songs, claims that spread quickly through fan communities and music blogs comparing melodies and chord progressions side by side. The accusations didn’t always end in lawsuits, but they stuck to the groups’ reputations at a moment when both were being pushed as flagship exports of the genre.

Dating Bans, Boycotts, and the Talent Show Pipeline

K-pop’s talent-show era — the “Superstar K” and “Produce 101” pipeline that minted many of the genre’s biggest names — carried its own controversies over editing decisions and contract fairness for contestants who didn’t win. Once idols debuted, the scrutiny didn’t ease up: dating became one of the fastest ways to trigger public backlash. Romances involving members of Girls’ Generation and EXO’s Baekhyun both drew boycott threats and heated fan outrage, a reaction rooted in agencies’ long-standing dating-ban policies meant to protect an idol’s marketable image.

Substance Scandals That Tested Korea’s Zero-Tolerance Media

Drug controversies hit two of the era’s most recognizable names. 2NE1’s Park Bom was investigated in 2010 over amphetamines flagged during a customs check, a case that didn’t become public knowledge until 2014, when it resurfaced and reignited scrutiny of her career. BIGBANG’s G-Dragon faced his own reckoning in 2011 after a marijuana incident became public, landing squarely in a media environment with almost no tolerance for drug use among idols. Both cases became reference points for just how unforgiving South Korea’s press and public can be once a substance allegation attaches to a star’s name.