Y lleisiau ar The Big Fix Up yw’r actorion sydd wedi ennill gwobrau Miriam Margolyes a Jim Carter, ynghyd ag Isy Suttie, Grace Ahmed a Joe Sugg – gyda Ben Whitehead yn gwneud llais Wallace.
The Big Fix Up is voiced by award-winning British actors Miriam Margolyes and Jim Carter, along with Isy Suttie, Grace Ahmed, Joe Sugg and Ben Whitehead as Wallace.