Only One Person - Cast

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40 cast members

Name	Episodes	Known for
Ahn Eun-jin Pyo In Sook Pyo In Sook See fewer	16	Hospital Playlist (2020)
Kim Kyung-Nam Min Woo Cheon Min Woo Cheon See fewer	16	Revolutionary Sisters (2021)
Park Soo-young Seong Mi Do / Sung Mi-Do Seong Mi Do / Sung Mi-Do See fewer	16	Drive My Car (2021)
Kang Ye-won Kang Se Yeon Kang Se Yeon See fewer	16	Tidal Wave (2009)
Ko Du-shim Yook Seong Ja [In Sook's grandmother] Yook Seong Ja [In Sook's grandmother] See fewer	16	Everglow (2021)
Ahn Chang-hwan Shin Tae Il Shin Tae Il See fewer	16	The Fiery Priest (2019)
Do Sang-woo Cho Shi Young [Regional Investigation Unit Inspector] / Jo Shi-Young Cho Shi Young [Regional Investigation Unit Inspector] / Jo Shi-Young See fewer	16	Alchemy of Souls (2022)
Yoon Bo-ra Sister Veronica [Nun of Hospice 'Morning Light] Sister Veronica [Nun of Hospice 'Morning Light] See fewer	16	Doctor Stranger (2014)
Seo Yeon-Woo Ha San Ha [a child in same neighborhood with Insook] Ha San Ha [a child in same neighborhood with Insook] See fewer	16	Past Lives (2023)
Lee Seung-joon Guseong Gang member Guseong Gang member See fewer	4	The Good the Bad the Weird (2008)
Lee Hang-na Choi Seong Hae Choi Seong Hae See fewer	4	Vincenzo (2021)
Jang Hyun-sung Pyo Kang Seon [In Sook's father] Pyo Kang Seon [In Sook's father] See fewer	4	Dakteoseu (2016)
Choi Young-woo Park Seung Seon Park Seung Seon See fewer	4	The Silent Sea (2021)
Han Gyu-Won Director of LE Group] / Gu Ji Pyo [Mi Do's boyfriend Director of LE Group] / Gu Ji Pyo [Mi Do's boyfriend See fewer	4	Taxi Driver (2021)
So Hee-jung Moon Young Ji Moon Young Ji See fewer	4	#Alive (2020)
Sung Byoung-sook Oh Cheon Deok Oh Cheon Deok See fewer	4	Tidal Wave (2009)
Joo In-Young Cha Yeo Wol Cha Yeo Wol See fewer	4	It's Okay to Not Be Okay (2020)
Lee Soo-Mi Sister Magdalena [Director of Hospice 'Morning Light'] Sister Magdalena [Director of Hospice 'Morning Light'] See fewer	4	Emergency Declaration (2021)
Han Kyu-Won Oh Young Chan [Se Yeon's husband] Oh Young Chan [Se Yeon's husband] See fewer	4	L.U.C.A.: The Beginning (2021)
Lee Dong-kyu JSH anchorman JSH anchorman See fewer	4	#Alive (2020)
Lee Bong-ryun Hwang Ma Jin [Regional Investigation Unit Team Leader] Hwang Ma Jin [Regional Investigation Unit Team Leader] See fewer	1	Okja (2017)
Jung Hyun-jun Min Woo Cheon (child) Min Woo Cheon (child) See fewer	1	Parasite (2019)
Yoon Bok-in Kang Se Yeon's mother Kang Se Yeon's mother See fewer	1	Hello, Me! (2021)
Kim Geum-soon Customer Customer See fewer	1	Train to Busan (2016)
Baek Hyeon-jin Ha Yong Geun Ha Yong Geun See fewer	1	Sympathy for Mr. Vengeance (2002)
Lee Jae-eun Scrubber Scrubber See fewer	1	Mouse (2021)
Jang In-sub Oh Jin Gyu [Regional Investigation Unit Sergeant] Oh Jin Gyu [Regional Investigation Unit Sergeant] See fewer	1	A Hard Day (2014)
Kim Byeong-chun Dr. Cho [Doctor in Hospice 'Morning Light'] Dr. Cho [Doctor in Hospice 'Morning Light'] See fewer	1	Sijipeuseu: The Myth (2021)
Jang Seo-won Jo Woong Do Jo Woong Do See fewer	1	Secret Garden (2010)
Kim Soo-hyung Lim Ji Hoo [Youngji's daughter] Lim Ji Hoo [Youngji's daughter] See fewer	1	Soulmate (2023)
Park Eun-Young Bathhouse manager Bathhouse manager See fewer	1	P.S. Girls (2016)
Ryu Yeon-Seok Dr. Yoo Ho Joon Dr. Yoo Ho Joon See fewer	1	Hospital Playlist (2020)
Moon Seo-yeon Swimming pool bully Swimming pool bully See fewer	1	Asurado (2021)
Oh Min-ae Oh Young Chan's mother Oh Young Chan's mother See fewer	1	Missing Yoon (2022)
Yoon Boo-jin Scrubber Scrubber See fewer	1	Police University (2021)
Lee Nam-Gyeong Pyo In Sook (Younger version) Pyo In Sook (Younger version) See fewer	1	18 Again (2020)
Kim Jung-hwan Kang Seo Goon Kang Seo Goon See fewer	1	Only One Person (2021)
Jeon Yi-soo Ho Sun Ho Sun See fewer	1	Only One Person (2021)
Jung Yeong-Do Reporter Park Reporter Park See fewer	1	#Alive (2020)
Park Sung-hoon Cho Shi Young Cho Shi Young See fewer		Into the Ring (2020)