Mr. Plankton

Woo Do-Hwan

Hae Jo

Woo Do-Hwan

Chae Seung-hyeok

Lee Yoo-mi

Jo Jae-mi

Oh Jung-se

Eo Heung

Kim Hae-sook

Beom Ho-ja

Kim Min-Suk

Yoo Gi-ho

Lee El

Bong-sook

Soo-jin Kim

Park Gal-ja

Rich Ting

Wang Chil-seong

Hae-yeong Lee

Chae Yeong-jo

Andrew Lee

Chae Seung-hyeok

Andrew Lee

Hae Jo

June Angela

Park Gal-ja

Song Yoo-hyun

Hae-won (Hae-jo's mother)

Alex Landi

John Na

Dae-hwan Oh

Wang Chil-seong

Jo Han-chul

Go Jae-geun

Ahn Suk-hwan

Oh Man-soo

Park Ji-yun

Eun-soo

Jin Yong-wook

Perfect Gene's employee