BIBI's Bold Claim: She Belongs in Changwon's Big Four

BIBI walked onto the set of KBS2's beloved quiz variety show Rooftop Problem Children on May 21, 2026, and immediately set off one of the night's most memorable debates — one that had her castmates erupting in laughter and Kim Jong-kook slowly shaking his head.

Before the episode was over, the singer had crowned herself one of the four greatest celebrities to ever come out of Changwon, South Korea's sprawling industrial city that has produced a genuinely remarkable number of entertainment superstars. Her co-presenter Joo Woo-jae agreed. Kim Jong-kook, who plays the role of the show's resident skeptic with great relish, did not.

The Changwon Big Four: Who's In, Who's Out

Episode 315 of Rooftop Problem Children (옥탑방의 문제아들, affectionately known to fans as "Okmoona") brought together two guests with strong Gyeongsang Province roots: BIBI, the husky-voiced singer known as the "icon of the MZ generation," and comedian Yang Sang-guk, dubbed the "icon of the countryside." The two joined the show's fixed cast — Song Eun-i, Kim Sook, Kim Jong-kook, Hong Jin-kyung, Yang Se-chan, and Joo Woo-jae — on the show's famous rooftop set for a night of trivia and unscripted banter.

It was the connection between BIBI and Joo Woo-jae, both proud Changwon natives, that set the episode's most talked-about moment in motion. When the hosts brought up the topic of regional pride and asked the panel who they thought deserved a spot in the unofficial "Changwon Big Four" — a half-joking designation for the city's most famous celebrity exports — the two barely needed to confer.

"First, we definitely have to be in there," BIBI said, gesturing to herself and Joo Woo-jae without a hint of hesitation. She then rounded out the list with actors Kang Dong-won and Lee Jun-ki, presenting the lineup as though it were the most natural thing in the world.

On paper, the core of her argument is difficult to dispute. Kang Dong-won, born in Busan but raised in Changwon, is one of Korea's most bankable film actors, known for prestige titles and a screen presence that launched a thousand fan accounts. Lee Jun-ki — whose career-defining performance in the 2005 historical comedy The King and the Clown made him a household name across Asia — also traces roots to the region. Both represent the kind of generational star power that any city would be proud to claim.

The problem, as the cast quickly pointed out, was Joo Woo-jae.

Kim Jong-kook's Reaction Said Everything

The moment Joo Woo-jae's name appeared alongside Kang Dong-won and Lee Jun-ki in the official Big Four declaration, Kim Jong-kook — the show's designated straight man and Joo Woo-jae's most committed roast partner — did not mince words.

"The fact that you're even being mentioned in this lineup is hard for me to accept," Kim Jong-kook said flatly, turning to look directly at Joo Woo-jae.

The studio erupted. Rather than defending his qualifications to stand among icons of Kang Dong-won's caliber, Joo Woo-jae responded with characteristic low cunning. If four slots was the problem, he had a solution: why not expand the list entirely?

"Let's make it the Seven Kings," Joo Woo-jae proposed, trying to negotiate his way into a significantly larger pool of eligible candidates. The logic being that a top-seven list would be much harder to argue against than a top four.

This did not make Kim Jong-kook any more accepting of the arrangement. The audience, however, found the entire exchange deeply satisfying.

Joo Woo-jae's regional pride complex was also on display from the moment the episode began. "Born in Geoje, raised in Changwon — that's how it goes," he announced, deploying what he insisted was an authentic Gyeongsang dialect accent. Kim Jong-kook's response: "Why does your dialect sound so unnatural?" — which set the comedic tone for the rest of the night.

When Masan Entered the Picture

The debate became considerably more complicated once the Masan question came up. In 2010, the cities of Changwon, Masan, and Jinhae were merged into what is now officially known as Changwon Special City — which means the expanded city limits technically absorb several more hometown celebrities into the discussion.

Actor Hwang Jung-min, one of Korea's most acclaimed dramatic performers and a consistent presence in the country's prestige film canon, hails from Masan. So does entertainer and former national weightlifting champion Kang Ho-dong, arguably one of the most recognizable faces in Korean variety television history. Both are household names of such magnitude that the cast immediately argued they should factor into any regional top-four conversation.

The inclusion of Hwang Jung-min and Kang Ho-dong would, of course, push the list well past four — which meant that both Joo Woo-jae's and BIBI's self-nominations were under renewed threat. The hosts leaned into the absurdity enthusiastically, with Joo Woo-jae's "Seven Kings" proposal suddenly looking less like a joke and more like a survival strategy.

Yang Sang-guk's Parallel Campaign

Not to be outdone by the Changwon contingent, guest comedian Yang Sang-guk opened his own regional prestige campaign from the neighboring city of Gimhae. With the effortless confidence of a man who had clearly rehearsed this pitch, Yang positioned himself as the second-greatest celebrity to emerge from his hometown — directly behind acclaimed actor Song Kang-ho, the face of Parasite and one of Korea's most internationally recognized performers.

"In terms of famous people from Gimhae, there's the great actor Song Kang-ho," Yang said. "And then there's Yang Sang-guk."

Song Eun-i, never one to let a soft pitch go unanswered, came back immediately: "First, beat Gimhae's sweet persimmons." The crowd loved it — Yang Sang-guk's attempt to rank himself above a famous regional agricultural product became one of the episode's standout punchlines, and a reminder of why Okmoona's loosely structured format works so well when the guests are willing to commit.

BIBI's Creative DNA and Changwon Pride

Amid the regional comedy, BIBI also offered a more personal window into her background. Earlier in the episode, she revealed that her grandmother was a poet and her father is a professional lyricist — a family lineage steeped in artistic expression that she described as inherited creative DNA. The candid detail offered fans a rare glimpse into the origins of her distinctive songwriting sensibility.

Known for her husky, immediately recognizable voice and genre-blending style that draws on R&B, pop, and experimental sounds, BIBI has steadily built one of Korean music's most original catalogues since her debut in 2019. Her creative independence and refusal to be easily categorized have been consistent hallmarks of her career, and the revelation about her family's artistic roots felt like a missing piece of the puzzle.

Her appearance on Okmoona — simultaneously confident, funny, and disarmingly candid — was a good reminder that BIBI's appeal extends well beyond music. As one of the show's most charismatic guests in recent memory, she held her own comfortably alongside a cast of seasoned variety veterans, turning regional pride into compelling television without breaking a sweat.

About Rooftop Problem Children

Rooftop Problem Children is a knowledge quiz and talk variety show that has been running on KBS2 for nearly a decade. The format centers on a fixed "Okmoona" ensemble — Song Eun-i, Kim Sook, Kim Jong-kook, Hong Jin-kyung, Yang Se-chan, and Joo Woo-jae — welcoming different guests each week for a mix of trivia challenges and free-flowing conversation on the show's signature rooftop set. Episode 315, which aired May 21 at 8:30 PM KST, was built around the theme of Gyeongsang Province regional humor — a premise the cast and guests clearly had a great deal of fun running with.