 Sarah SnookGrace (voice) | Grace (voice) |
 Kodi Smit-McPheeGilbert (voice) | Gilbert (voice) |
 Jacki WeaverPinky (voice) | Pinky (voice) |
 Magda SzubanskiRuth Appleby (voice) | Ruth Appleby (voice) |
 Dominique PinonPercy Pudel (voice) | Percy Pudel (voice) |
 Tony ArmstrongKen (voice) | Ken (voice) |
 Paul CapsisIan / Narelle (voice) | Ian / Narelle (voice) |
 Eric BanaJames the Magistrate (voice) | James the Magistrate (voice) |
| BBernie CliffordOwen Appleby (voice) | Owen Appleby (voice) |
 Davey ThompsonBen Appleby (voice) | Ben Appleby (voice) |
| CCharlotte BelseyYoung Grace (voice) | Young Grace (voice) |
| MMason LitsosYoung Gilbert (voice) | Young Gilbert (voice) |
 Nick CaveBill Clarke (voice) | Bill Clarke (voice) |
| AAgnes DavisonAdditional Young Grace (voice) | Additional Young Grace (voice) |
| DDaniel AgdagDoctor (voice) | Doctor (voice) |
| SSaxon WrightBert (voice) | Bert (voice) |
| SSelena BrennanAnnie Pudel (voice) | Annie Pudel (voice) |
 Adam ElliotDenise Floyd (voice) | Denise Floyd (voice) |
| SSmita SinghTeacher (voice) | Teacher (voice) |
| BBraiden AsciakDwayne Appleby (voice) | Dwayne Appleby (voice) |
| DDan DohertyShayne Appleby / Canberra Courier (voice | Shayne Appleby / Canberra Courier (voice |
| AAlexander Esenarro SantafeHector Santamaria (voice) | Hector Santamaria (voice) |
| HHedley ElliotCrossing Kid Hedley (voice) | Crossing Kid Hedley (voice) |
| CClancy ElliotCrossing Kid Clancy (voice) | Crossing Kid Clancy (voice) |
| GGrace ElliotCrossing Kid Gracey (voice) | Crossing Kid Gracey (voice) |
 Luke ElliotHeadmaster / Security Guard (voice) | Headmaster / Security Guard (voice) |
 Jub ClercNursing Home Resident Mavis / Sperm Nurse (voice) | Nursing Home Resident Mavis / Sperm Nurse (voice) |
| CCraig RossCraig Ross (voice) | Craig Ross (voice) |
| VVicki RossLaughter Club Vicki (voice) | Laughter Club Vicki (voice) |
| DDavid WilliamsSylvia (voice) | Sylvia (voice) |
