Actress Roh Yoon Seo is set to showcase her dancing skills in a surprise appearance on Mnet's World Street Woman Fighter, joining crew BUMSUP for the highly anticipated Mega Crew mission.

On the June 17 broadcast of the global dance competition show, the current "World of K-pop" mission concluded with fierce battles featuring music by aespa, Jennie, and G-Dragon.

But it was the teaser for next week's Mega Crew stage that drew the most attention, revealing celebrity collaborators joining teams in their home countries for one of the season's biggest challenges.

Among the high-profile guest appearances is Roh Yoon Seo, who will perform with Team Korea's BUMSUP.

In a short message aired during the preview, Roh said, "I'm truly honored to take part in such a cool project."

Her appearance marks a rare crossover between the worlds of Korean drama and competitive street dance.

Roh, best known for her performances in Our Blues and 20th Century Girl, will join BUMSUP alongside Bada, the leader of BEBE — the champion team of Street Woman Fighter season two.

The Mega Crew mission ups the stakes as teams return to their home countries to stage performances that reflect their national identities.

BLACKPINK's Jennie introduced the challenge in a video message, explaining, "The dancers will return to their home countries to create performances that fully embody their national identities."

Meanwhile, Japan's Osaka Ojo Gang will be joined by a star-studded lineup including TWICE members Momo, Sana, Jeongyeon, Nayeon, and Jihyo.

The teaser previewed a powerful duet between Momo and her sister, dancer Hana, sparking excitement among fans.

Some of the upcoming Mega Crew performances are expected to be among the season's highlights, featuring gargantuan group choreography, a touch of national pride, and a few celebrity collaborations that add to the anticipation.

World Street Woman Fighter airs Tuesdays at 10 p.m. KST on Mnet.