Siyoon

Acting

Biography

Kim Si-yoon is a South Korean singer and rapper managed by MYSTIC Story. She was officially revealed as a trainee under MYSTIC Rookies on February 18, 2020. Now, she is a member of the girl group Billlie.

Born: February 16, 2005

Place of Birth: Seoul, South Korea

Known For

60% Match2025TV

KPOPPED

Global music icons team up with world-renowned K-pop idols for spectacular song battles. Performing their biggest hits with a K-pop twist, these artists show up, show out, and shut it down in a friendly competition for the ultimate bragging rights.

60% Match2022HD

the interlude of 11

For their first year anniversary Billlie is showcasing a concert to deliver the story of their unique universe, by using XR(Extended Reality) to tear down the border of different dimensions, time, and space.

60% MatchHD

Perfect Girl

With only four spots available in a new K-pop supergroup and the final cut a week away, the competition is off the charts. When a talented and mysterious new girl is introduced at the last minute, things start to get strange — girls are being hunted and attacked one by one, but who is responsible for the carnage, and more importantly... who will make the final cut?

60% Match2022TV

Idol's Physical Race

Basic Physical Fitness Improvement Project.

Filmography

2025

KPOPPED

as Self

2022

the interlude of 11

2022

Idol's Physical Race

as Self

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Perfect Girl