Matthew Whelan as Niko (voice)

Emma Jenkins as Stella (voice)

Paul Tylak as Prancer / Cupid / Siigur / Leo Lemming / Lasse Lemming / Lemmings (voice)

Roger Gregg as Einar / Dasher (voice)

Dermot Magennis as Julius & Ilmar (voice)

Aileen Mythen as Wilma / Olga / Lemmings (voice)

Lucy Smith as Lilli (voice)

Harry Weld-Moore as Jonni (voice)

Justin Daniels Anene as Morten (voice)

Brenda McDonald as Blitzen / Donner / Nillá (voice)

Mary Murray as Ilda / Lala Lemming (voice)

Susan Slott as Oona (voice)

Luke Griffin as Comet / Dancer / Gusto / Vixen (voice)

Michael Sheehan as Lenni (voice)

Cameron Simpson as Young Prancer (voice)

Evan O'Connor as Young Ilmar (voice)

Michelle Read as Leif / Lilly Lemming (voice)

Olivia Caffrey as Lalli Lemming (voice)

Doireann Ní Chorragáin as Lemming (voice)

Maggie Cadwell as Lemming (voice)

Garry Mountaine as Santa Clause