Cast 6
Um Sang-hyun
Volt (voice) (242 episodes)
Jeon Tae-yeol
Sammy (voice) (242 episodes)
Shin Yong-woo
Max (voice) (242 episodes)
LS
Lee So-yeong
Lucy (voice) (242 episodes)
HJ
Hong Jin-wook
Chen (voice) (242 episodes)
YJ
Yang Jeong-hwa
(212 episodes)
Directing 2
LY
Lee Young-jun
Director (52 episodes)
Kim Su-hoon
Director (52 episodes)
Sound 1
DM
Dong Min-Ho
Music Director (52 episodes)
Visual Effects 4
BKS
Bow Kook Seo
Animation (52 episodes)
EJL
Eun Jin Lee
Animation (52 episodes)
KK
Kim Kyoung-Ha
Animation (52 episodes)
JSL
Ji Sung Lee
Animation (52 episodes)