(Film director); (Actress, screenwriter, director)
(Coach of the South Korea National Representative Cheerleading Team)
Shin Sung-rok joins the show as a permanent cast member
(Coach of the South Korea National Representative Cheerleading Team)
Special appearance by Shin Soo-ji
(Athletes)
Pak Se-ri, Choi Byung-chul, Kim Dong-hyun, Cho Jun-ho and Kwak Yoon-gy
(Athletes)
Pak Se-ri, Choi Byung-chul, Kim Dong-hyun, Cho Jun-ho and Kwak Yoon-gy
Special appearance by Cho Jung-sik
(Actor)
Phone Call Hint Fairy: Jeon Do-yeon
(Actor)
(Trot Singers)
(Trot Singers)
Special appearances by Ha Chun-hwa, Hyun Sook and Jin Sung
(Retired professional Go player)
Special appearance by Oh My Girl through video call
(Retired professional Go player)
Lee Sang-yoon and Yook Sung-jae's final episode before leaving the show// Special appearances via video by Park Ji-sung, Jang Yoon-jeong and Shin Ae-ra
(Samul nori musician) Special appearance by Ong Seong-wu (as 1-day apprentice)
(Samul nori musician) Special appearance by Ong Seong-wu (as 1-day apprentice)// Special appearances by Daniel Lindemann and Sam Okyere
(Body builder, sports trainer), (CEO of Korea Art Psychology Counselling Association), (Chef)
1-day Disciples: Kim Dong-hyun, Lee Jin-hyuk (UP10TION)
(Body builder, sports trainer), (CEO of Korea Art Psychology Counselling Association), (Chef)
1-day Disciples: Kim Dong-hyun, Lee Jin-hyuk (UP10TION)
(Production Crew of Unanswered Questions, news announcers of SBS Eight O'Clock News, Master in the House PD )
SBS 1-Day Intern Special// 1-day Disciples: Kim Dong-hyun, Cha Eun-woo (Astro)//
Special appearances:Cho Jung-sik, Lee Soo-jung and Kim Yoon-sang
(Production Crew of Unanswered Questions, news announcers of SBS Eight O'Clock News, Master in the House PD )
SBS 1-Day Intern Special// 1-day Disciples: Kim Dong-hyun, Cha Eun-woo (Astro)// Special appearances: Kim Yoon-sang, Cho Jung-sik// Special voices appearances by Han Ji-min, You Hee-yeol, Baek Jong-won and Ma Dong-seok
(Athletes) Kim Dong-hyun and Cha Eun-woo (Astro) join the show as permanent cast members
(Athletes) Kim Dong-hyun and Cha Eun-woo (Astro) join the show as permanent cast members// Special appearances by Seo Go-eun, Pak Se-ri, Choi Byung-chul and Cho Jun-ho
(Singer-Songwriter)
(Singer-Songwriter)
Special appearances by Seo Young-do, Gil Eun-kyung and Rothy
(Professional volleyball player)
(Professional volleyball player)
Special appearances by Kim Su-ji, Yang Hyo-jin, Kim Hee-jin and Go Ye-rim
(Singer, actress) Phone Call Hint Fairy: Lee Sang-yoon
Special appearances by Hong Jin-kyung, Eunhyuk (Super Junior), MJ (Astro), Lee Jae-yoon, Ha Do-kwon and Lee Jin-ho
(CEO of Kakao Games)
(CEO of Meritz Asset Management)
Special appearance by Hyun Young, Im Do-hyung, Kim Seol and Oh A-rin
(Singer, actress)
Video Call Hint Fairy: Park Chan-wook
(Singer, actress)
Special appearance by Koo Jun-yup (Clon)
(Comedians)
(Comedians)
(Mixed martial artist)
(Professional boxer)
(Actress)
(Actress)
(Entrepreneur, CEO of PowerfulX)
(Republic of Korea Navy Special Warfare Flotilla trainer)
Special appearance by Lee Dong-gook via video call
(Republic of Korea Navy Special Warfare Flotilla trainer)
(Broadcast personality) (History lecturer) Family Visit Special
(Singer, actor)
(Singer, actor) Special appearance by Huh Gak and Cho Hyun Min
(Actor) Special appearance by Cha Tae-hyun (also the hint fairy) and Bae Sung-jae (via video call)
(Actor) Special appearance by Cha Tae-hyun (also the Phone Call Hint Fairy)
(Fashion designer) Phone Call Hint Fairy: Lee Na-young
Special appearances by Han Hye-jin and Irene Kim
(Singer-songwriter)
(singer, actor, entertainer) Special appearance by Yoon Jong-shin
(Retired professional football player)
(Retired professional football player) Special appearances by Park Dong-hyuk and Hyun Young-min
(Retired professional tennis players)
(Singer-songwriter) Special appearances by Sean Song, Park Ji-chan and Seol Yo-eun
(Singer-songwriter) Special appearances by Sean Song, Park Ji-chan and Seol Yo-eun
(Professional baseball player)
Phone Call Hint Fairy: Choo Shin-soo