as Jeong Ho Su

as Hoon

as Park Beom-o

as Jin Da-bum

as Jung Jin-wook

as Kim Cheol-su

as Young Jeong-u

as Han Jung-woo (teen)

as Son

as Go Eun-ho

as Chan

as Bo-hee

as Young Se-ha

as Young Hae Won-maek

as Deok-gu

as Sang-cheol

as Seo Geon Tae / "Pebble" [Young]