Their group name is just a number!
_ _ _ _ _teen

Seventeen
It could be more than once or it could be this powerhouse girl group.
Twice

Most K-pop artists are Korean. The second most common nationality is this.
Chinese
Ten, Hundred, Thousand, Million
Ten

Around 1995, Lee Sooman introduced the artist development system that became the bedrock for K-pop, heavily inspired by a similar system at this legendary African American record label, home of The Jackson 5 and more.
Motown
AB_IX

AB6IX
It could be an ace of spades, jack of diamonds, 2 of hearts, or this rare co-ed group.
KARD

When Nichkhun debuted in 2pm in 2008, he became the first Southeast Asian K-pop artist, having grown up in this country nicknamed "the Land of Smiles."
Thailand
Lunar, Solar, Celestial, Nuclear
Solar

When the 1997 Asian Financial Crisis sank the South Korean economy, K-pop labels turned their attention to this nearby nation, the world's second-largest music market after the U.S.
Japan
_Minute

4Minute
It could be a colorful cake flavor or this girl group known for switching between bright pop and dark R&B.
Red Velvet

Tzuyu of Twice accidentally triggered an international controversy and influenced a presidential election when she held up this flag from her homeland on a Korean TV program.

Taiwanese flag
LJ, MJ, NJ, OJ
MJ

Girl group 2NE1 played a big role in expanding K-pop's reach into Southeast Asia, thanks in part to member Sandara Park's prior entertainment career in this country.
The Philippines
Hearts_Hearts

Heart2Hearts
It could describe having a smooth glossy surface, being bright with the rays of the sun, or MJ's favorite K-pop group.
SHINee

WayV, a Mandarin-language K-Pop group, includes artists from China, Thailand, Taiwan, and this special administrative region known as the "Las Vegas of Asia."
Macau
D-Tortoise, E-Tiger, F-Bird, G-Dragon
G-Dragon

In 2009, Wonder Girls became the first K-pop group to tour the United States, serving as the opening act for this Disney boy band.
The Jonas Brothers
The three-digit number in this group's name refers to the longitude coordinate of Seoul. NCT 12_

NCT 127
It could be a French spin on the fiery highest order of angels, or it could be this girl group whose name is an anagram of "I'm fearless."
Le Sserafim
When Fatou debuted in Blackswan in 2020, she became the first African-born K-Pop artist, hailing from this nation on the continent's westernmost point.

Senegal
Auguste, Céline, Solange, Yves
Yves

In 2012, Psy's viral "Gangnam Style" was the first ever video to hit this achievement on YouTube.
1,000,000,000 views