Pemeran On the Verge of Insanity

Jung Jae Young

as Choi Ban Seok

Pemeran Utama

Moon So Ri (문소리)

as Dang Ja Yeong

Pemeran Utama

Lee Sang Yeob

as Han Se Kwon

Pemeran Utama

Kim Ga Eun

as Seo Na Ri

Pemeran Utama

Kim Nam Hee

as Shin Han Soo

Pemeran Pembantu

Ahn Nae Sang

as Noh Byung Guk

Pemeran Pembantu

Park Won Sang

as Paeng Soo Gon

Pemeran Pembantu

Park Sung Geun

as Gong Jung Pil

Pemeran Pembantu

Kim Joong Ki

as Ko Jeong Shik

Pemeran Pembantu

Jo Bok Rae

as Han Seung Gi [Chairman]

Pemeran Pembantu

Cha Chung Hwa

as Shin Jung Ah

Pemeran Pembantu

Dong Hyun Bae

as Ki Jeong Hyun

Pemeran Pembantu

Lee Seo Joon

as Ahn Jun Soo

Pemeran Pembantu

Cheon Hee Joo

as Gye Bo Ram

Pemeran Pembantu

Lim Il Gyu

as Oh Jae Il

Pemeran Pembantu

Jung Sung Hoon

as Yoon Gi Joon

Pemeran Pembantu

Kim Yae Eun

as Oh Hye Yeon

Pemeran Pembantu

Lim Hyoun Soo

as So Sang Wook

Pemeran Pembantu

Choi Myung Gil

as Choi Hye Soo [Na Ri's mother]

Pemeran Pembantu

Baek Min Hyun

as Ahn Joon Soon [Member of robot cleaner development team]

Pemeran Pembantu

Jung Yeo Joon

as Gil Chang Hwan [Member of QA Team]

Pemeran Pembantu

Oh Yong

as Pyeon Dong Il

Pemeran Pembantu

Kim Jin Ho

as Bae Jung Tak

Pemeran Pembantu

Jung Ye Na

as Choi Seon Yi [Ban Seok's daughter]

Pemeran Pembantu

Nam Neung Mi

as [Ban Seok's mother]

Pemeran Pembantu

Yang Jae Hyun

as Yoo Woo Jong

Pemeran Pembantu

Son Ye Ji

as Park Da Som [Purchasing department senior]

Pemeran Pembantu

Choi Yoon Jung

as Dang Min Young [Ja Young's sister]

Pemeran Pembantu

Koo Min Hyuk

as Jeon Myung Woo [Development team 3 manager]

Pemeran Pembantu

Kim Yun Seo

as Jeong Seong Eun

Pemeran Pembantu

Kim Gyu Do

as Cha Gyu Won [Development team #3 senior]

Pemeran Pembantu

Oh Yoo Na

as Heo Ga Young [Product Planning]

Pemeran Pembantu

Jung Hyun Chul

as Sung Do Gyun

Pemeran Pembantu

Song Yo Sep

as Jin Seung Ho (Ep. 1)

Bintang Tamu

Chu Eun Kyung

as Jo Sun Young (Ep. 1)

Bintang Tamu

Choi Duk Moon

as Kim Young Soo (Ep. 1, 15)

Bintang Tamu

Jeon Yeo Jin

as Headhunter (Ep. 3)

Bintang Tamu

Kim Han Joon

as Mr. Jung [AA Electronics] (Ep. 3)

Bintang Tamu

Kim Shin Yul

as [Executive] (Ep. 5)

Bintang Tamu

Kim Gyeong Min

as Shin Jong Sik [QK Korea] (Ep. 8)

Bintang Tamu

Lee Sung Il

as [Auditor] (Ep. 8-9)

Bintang Tamu

Park Ki Ryung

as Park Ki Ryoong (Ep. 8, 16)

Bintang Tamu

Kwak Min Seok

as Lee Hyun Joong (Ep. 10)

Bintang Tamu

Jang Dae Woong

as [Executive] (Ep. 10)

Bintang Tamu

Lee Jun I

as [Gas station attendant] (Ep. 10)

Bintang Tamu

Son Seon Geun

as [Hanmyeong HQ executive] (Ep. 10)

Bintang Tamu

Jung Dong Gyu

as [Mayor] (Ep. 11)

Bintang Tamu

Jang Joon Hyun

as Lee Kyung Hoon (Ep. 12)

Bintang Tamu

Kwon Hyuk Soo

as [Han Seung Gi's uncle] (Ep. 14)

Bintang Tamu

Jeong Young Do

as [Reporter] (Ep. 14)

Bintang Tamu

Kim Sang Il

as Mr. Yoon [Hanmyeong E & C] (Ep. 15)

Bintang Tamu

Kim Jae Il

as Kang Jae Hyuk [GR Tech] (Ep. 16)

Bintang Tamu

Hwang Tae Kwang

as Son Tae Sung (Ep. 16)

Bintang Tamu

Uhm Hye Soo

as Lee Han Sol (Ep. 16)

Bintang Tamu

Park Byung Wook

as [Executive] (Ep. 16)

Bintang Tamu

Kim Pan Kyum

as [CEO's assistant] (Ep. 16)

Bintang Tamu

Park Chang Woo

as Dong Gyoo

Bintang Tamu

Yoo Sang Jae

as Son Hyung Ki [Finance team]

Bintang Tamu

Park Keun Rok

as Han Seung Jin [Hanmyeong E & C ]

Bintang Tamu

Kim Jin Goo

as [Hanmyeong Electronics HQ executive]

Bintang Tamu

Yoo Jung Rae

as Eo Hae Mi [Research & Development]

Bintang Tamu

Choi Yoon Jung

as Dang Min Yeong

Bintang Tamu

Yoon Hae Joo

as [Director Eun's voice]

Bintang Tamu

Kang In Gi

as No Jae Yeol

Bintang Tamu

Park Jin Soo

as Seo Yoon Taek

Bintang Tamu

Park Se Jun

Composer

Choi Jung In

Sutradara

Jung Do Yoon

Screenwriter