 Chris O'DowdNarrator (voice) | Narrator (voice) |
 Amy HubermanPuffin Egg Mammy (voice) | Puffin Egg Mammy (voice) |
| EEva WhittakerIsabelle (voice) | Isabelle (voice) |
| BBeth McCaffertyOona (voice) | Oona (voice) |
 Aaron MacGregorMarvin (voice) | Marvin (voice) |
| EEuan McGrathPhoenix (voice) | Phoenix (voice) |
| JJames David HenryMossy (voice) | Mossy (voice) |
| AAnna McDaidMay (voice) | May (voice) |
| GGeraldine ColeMama (voice) | Mama (voice) |
| MMatt DeeryPapa (voice) | Papa (voice) |
| EEvan LordanPuffin Egg Daddy (voice) | Puffin Egg Daddy (voice) |
| OOrna CanningFlynn (voice) | Flynn (voice) |
| CClara McLaughlinSilky (voice) | Silky (voice) |
| JJim CraigBernie (voice) | Bernie (voice) |
| MMara Reid MooreLala (voice) | Lala (voice) |
| LLaura McCallanSpiky (voice) | Spiky (voice) |
| LLorraine LordanIsabelle's Mammy (voice) | Isabelle's Mammy (voice) |
 Paul YoungIsabelle's Daddy (voice) | Isabelle's Daddy (voice) |
| SSophie BorléeAdditional Voices (voice) | Additional Voices (voice) |
| EEimear DoherrtyAdditional Voices (voice) | Additional Voices (voice) |
| CCaoimhe Ni BhradaighAdditional Voices (voice) | Additional Voices (voice) |
 Jeremy PurcellAdditional Voices (voice) | Additional Voices (voice) |
