The Noh family •
Lee Soon-jae as Noh Song •
Roh Joo-hyun as Noh Soo-dong •
Geum Bo-ra as Wang Yoo-jung •
Ko Kyung-pyo as Noh Min-hyuk •
Seo Yea-ji as Noh Soo-young •
Choi Song-hyun as Noh Bo-young • Kim Jung-min as Kim Do-sang mama • Kim Dan-yul as Kim Kyu-young •
Jung Joon-won as Kim Kyu-ho
Their neighbors •
Ha Yeon-soo as Na Jin-ah • Oh Young-shil as Gil Seon-ja •
Kang Nam-gil as Na Se-dol •
Yeo Jin-goo as Hong Hye-sung / Noh Jun-hyuk •
Chang Kiha as Jang Yul •
Kim Kwang-kyu as Director Oh •
Julien Kang as Julien •
Mina Fujii as Mina Fujii • Park Eun-ji as Kim Ji-hyun • Yoon Seo-hyun as Yoon Seo-hyun •
Kim Sung-eun as Kim Sung-eun • Kim Sung-min as Kim Ui-chan •
Jung Hye-sung as Park Seung-hee • Park Hwi-soon as Park Hwi-soon • Na Seung-ho as Min-hyuk's friend • Yang Joo-ho as office manager of law firm
Cameos and guest appearances •
Hwang Jung-eum as Soo-dong's secretary (ep 1) •
Yoo In-na as jogging woman, Do-sang's dream girl (ep 4, 6) •
Park Jung-soo as Mi-sook (ep 7) •
Yoon Kye-sang as brain surgeon Kye-sang (ep 9–10) •
Park Kyung-lim as Bo-young's husky voice (ep 10) •
So Yoo-jin as suspicious housekeeper (ep 11) •
Sunwoo Yong-nyeo as Noh Song's younger sister (ep 14) •
Lee Jong-suk as Jong-suk (ep 15) •
Jung Woong-in as dog's voice (ep 15) • Jung Yoo-geun as a kid on the bus with Julian (ep 17) •
Lee Kwang-soo as movie director, Bo-young's first love (ep 18) •
Park Ha-sun as president of Jang Yul's fan club (ep 30) •
Kiha & The Faces (ep 30) •
Seo Ji-seok as basketball teammate of young Noh Song (ep 38) • Yoo Jung-hyun as interview program host (ep 38) •
Choi Woong as Lee Ji-hun, Noh Soo-young's blind date (Ep. 40) • Yoon Ki-won as martial arts studio master (ep 47) •
Jeong Jun-ha as Wang Jun-ha (ep 55) •
Na Yeong-seok as police officer (ep 66) • Choi Eun-kyeong as Do-sang's cousin (ep 68) •
Jang Hang-jun as professor (ep 69) • Im Sung-min as professor's wife (ep 69) •
Seo Shin-ae as Seo Shin-ae (ep 79) •
Choi Hong-man as Choi Hong-man (ep 79) •
Krystal Jung as Jung Soo-jung (ep 81) •
Ahn Nae-sang as photographer (ep 87) • Gong Seo-young as Gong Seo-young (ep 95, 98–99) •
Kim Hye-seong as delivery boy (ep 100) • Noh Hyung-ok as AWOL soldier (ep 100) • Oh Seung-eun as Min Ji-yeon's mother (ep 103) •
Jang Jung-hee as Yoo-jung's high school schoolmate (ep 109) • Yoon Gun as Soo-young's friend (ep 111) •
Yoon Yoo-sun as bakeshop owner (ep 112) •
Lee Juck as ex-boyfriend of young Seon-ja (ep 114) ==Original soundtrack==