Pemeran Yumi's Cells

Kim Go Eun (김고은)

as Kim Yu Mi

Pemeran Utama

Ahn Bo Hyun (안보현)

as Koo Ung

Pemeran Utama

Park Ji Hyun (박지현)

as Seo Sae I [SLW Studio]

Pemeran Pembantu

Lee Yoo Bi

as Ruby [Yu Mi's co-worker]

Pemeran Pembantu

Joo Jong Hyuk

as Louis [SLW Studio game developer]

Pemeran Pembantu

Jung Soon Won

as Nam Ju Hyeok [Daehan Noodles section chief]

Pemeran Pembantu

Park Jin Young (박진영)

as Yoo Ba Bi / Bobby

Pemeran Pembantu

Mi Ram

as Kang I Da [Yu Mi's coworker]

Pemeran Pembantu

Yoon Hyun Gil

as Seo Yun U [Daehan Noodles department manager]

Pemeran Pembantu

Choi Min Ho (최민호)

as Chae U Gi [Yu Mi's coworker] (Ep. 1-2, 8, 10, 12, 14)

Bintang Tamu

Nam Da Nu

as Koo Ung [Young] (Ep. 2)

Bintang Tamu

Lee Ki Bbeum

as [Frog festival staff] (Ep. 3)

Bintang Tamu

Min Jae

as [Boutique employee] (Ep. 4)

Bintang Tamu

Hong Ru Hyeon

as [Julie Hotel phone rep.] (Ep. 6)

Bintang Tamu

Yang Ha Yoon

as [Julie Hotel receptionist] (Ep. 6)

Bintang Tamu

Lee Sang Yi (이상이)

as Ji U Gi [Yu Mi's ex-boyfriend] (Ep. 7-8)

Bintang Tamu

Kim Hye In

as Hong Na Ri [Yu Mi's college friend] (Ep. 7-8)

Bintang Tamu

Park Yu Mi

as [Alumna] (Ep. 7-8)

Bintang Tamu

Moon Hye In

as [Alumna] (Ep. 7-8)

Bintang Tamu

Shim Hye Rim

as [Alumna] (Ep. 7-8)

Bintang Tamu

Jung Soo Ji

as Ko Si Yeon [Yu Mi's college friend] (Ep. 7-8, 14)

Bintang Tamu

Jeong Seo A

as Kim Yu Mi [Child] (Ep. 8)

Bintang Tamu

Park Bo Eun

as [Daehan Noodles Info Desk employee] (Ep. 8)

Bintang Tamu

Ahn Yeon Ji

as [Yu Mi's co-worker] (Ep. 9)

Bintang Tamu

Seo Jung Bin

as [Yu Mi's co-worker] (Ep. 9)

Bintang Tamu

Yun Yu Sun

as [Yu Mi's mother] (Ep. 10, 14)

Bintang Tamu

Kang Chan Yang

as [Grocery store cashier] (Ep. 11)

Bintang Tamu

Kim Mi Soo

as Ja Yeong (Ep. 12)

Bintang Tamu

Kim Cha Yoon

as Lee Bonnie [Yu Mi's co-worker] (Ep. 12-14)

Bintang Tamu

Kwon Seung Woo

as Kang Han Byeol [Yu Mi's coworker] (Ep. 12, 14)

Bintang Tamu

Jo Mo Se

as [Wedding guest] (Ep. 13)

Bintang Tamu

Choi Hui Seung

as [Wedding guest] (Ep. 13)

Bintang Tamu

Jeong Yoon Hee

as [Furniture saleswoman] (Ep. 13)

Bintang Tamu

Sung Ji Ru

as [Yu Mi's father] (Ep. 14)

Bintang Tamu

Uhm Young Sik

Animation Department

Kim Da Hee

Animation Department

Kim Tae Seong

Composer

Lee Sang Yeob

Sutradara

Song Jae Jung

Screenwriter

Kim Yoon Joo

Screenwriter

Kim Kyung Ran

Screenwriter

Ahn Soy

as [Yu Mi's Love, Cheapskate, & Reaction Doll Cells]

Voice Actor

Park Ji Yoon

as [Yu Mi's Emotional Cell]

Voice Actor

Shim Kyu Hyuk

as [Yu Mi's Rational & Stomach Cells]

Voice Actor

Lee Jang Won

as [Yu Mi's Hunger Cell]

Voice Actor

Ahn Young Mi

as [Yu Mi's Naughty Cell]

Voice Actor

Jeong Jae Heon

as [Yu Mi's Detective, Rampage, & Lullaby Cells]

Voice Actor

Kim Yeon Woo

as [Yu Mi's Fashion Cell]

Voice Actor

Eom Sang Hyeon

as [Yu Mi's Hysteria Cell]

Voice Actor

Sa Moon Yeong

as [Yu Mi's Anxiety, Inner Feeling, & Fussy Cells]

Voice Actor