Lee Sung-min

Joo Tae-ju

Kim Seo-hyung

Min Su-hee

Bae Jung-nam

Cho Man-sik

Shin Ha-kyun

Ali (voice)

Kal So-won

Seo-yeon

David Lee McInnis

Dmitri

Yoo In-na

Ming Ming (voice)

Kim Soo-mi

Parrot (voice)

Lee Sun-kyun

Black goat (voice)

Lee Jung-eun

Gorilla (voice)

Lee Soon-jae

Hamster (voice)

Kim Bo-sung

Pug (voice)

Kwak Ja-hyung

Boar (voice)

Joon Park

Eagle (voice)

Park Yu-mil

Ho-kyung

Lee Soo-kyung

So-jin

Lee Seung-cheol

President

Lee Dong-hee

Zoo director

Nam Gyeong-min

Squad leader

Park Hyuk-kwon