MasterOfAll

Correction: No. Esme does not have an American accent in "Babe".

MasterOfAll

Correction: Both Fly and Rex have American accents in the first film. Esme's accent in the first film has mostly American pronunciations but Scottish/Welsh cadence. Most of the live-action cast in the first film, including Esme's actress, were Australian, but if you look closely at their lip movements in the first film, you'll see typical Australian accent mouth movements with American accents dubbed over.