Meet Fifty Fifty, the K-pop band behind the song 'Cupid' that's gone viral on TikTok

• On February 24, the four-member K-pop group Fifty Fifty released "Cupid" in both Korean and English.
• The song went viral on TikTok, with the hashtag #cupidchallenge at almost 108 million views.

K-pop group Fifty Fifty marks its first entry on the Billboard Hot 100 list this month with "Cupid," a song that's been going viral on TikTok since its release on February 24.

The quartet debuted last year on November 18 with their album "The Fifty," which features four songs including title track "Higher."

But it was their TikTok-viral single that made them blow up internationally.

Available in two versions, one in Korean and the other in English, both official tracks have been used as background music in over 660,000 videos on TikTok.

The sped-up version made by TikTok user @c5won has been used in more than 2.6 million TikTok videos as of April 12, and is used as a popular backing track for all sorts of videos on the platform.

A TikTok video by @thatbitchyouknow1, where the creator gives a tour of the items she bought from Amazon to decorate her room, features the sped-up version of the song, and has over 8.7 million views and 2.2 million likes as of April 12.

But the song doesn't seem to be celebrating the same magnitude of popularity in South Korea. There, it's outside of the top 100 lists on domestic charts like Melon, according to South Korean outlet The JoongAng.

Meanwhile, the song has held on to its spot at the top of Spotify's Viral 50 Global playlist since March, though it recently got bumped to second place by Aziz Hedra's "Somebody's Pleasure," as of April 12.

And on Youtube, the official music video for the song has gathered more than 20 million views as of April 12.

Fifty Fifty's name means the "50 vs 50" chance of ideal versus reality.

It represents both vague anxiety and anticipation of the future, according to South Korean outlet Sports JoSun.

Another meaning of the name is that the first 50 represents the fans — who are officially called "hunnies" — and the second represents the members, they add up to 100, according to K-pop news outlet Soompi.

Comprising four Korean members from different backgrounds, each member plays a different role in the team.

In the K-pop world, it is standard practice that each member holds a specific position in the group.

Depending on the nature of their role, main positions will often get more lines in a song or the center spot when it comes to choreography, followed by lead positions, then sub positions, according to K-pop news outlet Koreaboo.

Saena is the group's main dancer and sub rapper.

According to the label's official website, the 19-year-old is the leader of the team.

In 2018, pre-debut Saena was active on "Dancing High," a South Korean dance competition TV program. At 14, she was amongst the final 43 teams, including individuals, to make the cut out of more than 3,000 teen applicants, according to Soompi.

"When I was younger, I watched this four-member girl group called BESTie performing on TV, and smiling brightly onstage. I absolutely fell for their performance and that inspired me to dream of becoming an artist and idol," Saena said in an interview with NME.

At 18 years old, Aran is the youngest member and the lead rapper of the team.

She grew up watching K-pop group Girls' Generation, and recalls dancing to their song "Gee" while she was getting a hair perm, according to an interview with FOX13 News.

Aran is already writing a few R&B songs on her own, and her goal is to release R&B and hip-hop music, and perform them as Fifty Fifty, according to the interview with NME.

Keena is the oldest member at 20, and is the group's main rapper and sub vocal.

In the interview with FOX13 News, she shared that she started dreaming of becoming an artist after watching a concert video of K-pop group Apink.

Keena also participated in writing the lyrics for the Korean version of "Cupid." She shared in the interview with NME that she wanted to show Fifty Fifty's own interpretation of Cupid, rather than the generic perception of it as a symbol.

Sio, 18, is the main vocal and lead dancer.

Her childhood ambition was to become a writer as she enjoys writing and reading, according to a concept film featuring the singer.

In the interview with NME, she shared that she has always wanted to become a person who can express herself well, and decided to become an idol to express herself through music and dance.

Her goal is to eventually become an artist who can also write and produce to truly express herself.

Fifty Fifty is the only active group under the small South Korean label, Attrakt.

The CEO of Attrakt, Jeon Hong-joon, had to sell his car to cover production costs after recording Fifty Fifty's debut album at a friend's studio, according to South Korean outlet The Korea Economic Daily.

"I hadn't even thought of Billboard. We had no money for global marketing, so I went around visiting local label companies and asked them to listen to our music at least once," Jeon told The Korea Economic Daily.

Jeon also added that their goal is for Fifty Fifty to become the "female BTS."