Pemeran Heartbeat

Kim Geon U

as Cheol Yi

Pemeran Utama

Jeon Do Yeon

as [Cheol Yi's mom]

Pemeran Pembantu

Sul Kyung Gu (설경구)

as [Cheol Yi's dad - Voice]

Pemeran Pembantu

Lee Joong Ok

as [Police officer]

Pemeran Pembantu

Kim Hak Seon

as [Man with a vest]

Pemeran Pembantu

Park Ok Chool

as [Megaphon - Voice] / [Child next door's mom]

Pemeran Pembantu

Park Bo Kyung

as [Elevator mom]

Pemeran Pembantu

Mowg

Composer

Lee Chang Dong

Sutradara

Oh Jung Mi

Screenwriter