- Kim Young-cheol (Self)
- Min Kyung-hoon (Self)
- Kang Ho-dong (Self)
- Lee Su-geun (Self)
- Kim Hee-chul (Self)
- Seo Jang-hoon (Self)
- Lee Sang-min (Self)
Men on a Mission — S1E279
Episode: Knowing Bros Children's Song Project for Children's Day
Air Date: 2021-05-08
Runtime: 90 min