- Hong Bum-ki
- Kai / Doctor Gong (voice)
- Kim Eun-ah
- Jang Se-mo / Koriri (voice)
- Sim Gyoo-Hyeok
- Louis / Cab (voice) (as Shim Kyu-hyuk)
- Jung Hye-won
- Super Mystery / Lambeo (voice)
- Ahn Hyun-seo
- Na Yong-chan
- Kim Jang
- Jay
- Lee Jang-won
- Pumpkin / Stego (voice)
- Yang Jeong-hwa
- Soo-oh / Diamond
- So Jeong-hwan
- Kang Woo-ram
- Hong Jin-wook
- Carlobis / Spino (voice)
- Yeo Min-jeong
- Tirara / Silua (voice)
- Kim Seo-young
- Tricera
- Jeong Seon-hye
- Ahn Kyeong-joon / Baby dinosaur (voice)
- Min Seung-woo
- Titon / Therizino (voice)
- Han Shin
- Topa / Alkion (voice)
- Sang Hyun Uhm
- Tyrano
- Seo Yu-ri
- Hong Yoo-mi / Ptera (voice)
