McDull is not the brightest kid on the block, but he continuously tries to do his best to please his mother. Still it seems he may not be destined for great things like she wishes, but McDull strives to try anyway.
| Actor | Role |
|---|---|
| LLee Chun-WaiMcDull (voice) | McDull (voice) |
 Jan Lam Hoi-FungMcDull (Adult) (voice) | McDull (Adult) (voice) |
 Sandra Ng Kwan-YuMrs McDull (voice) | Mrs McDull (voice) |
 Anthony Wong Chau-SangPrincipal / Logan (voice) | Principal / Logan (voice) |
| DDejay ChoiMiss Chan (voice) | Miss Chan (voice) |
 Lung Tin-SangNot listed | Not listed |
 May Che Yuet-MeiNot listed | Not listed |
| NNg Cheuk-LungNot listed | Not listed |