For whatever reason, we relate to anything godlike with an English accent. The English are very proud of that. And with anything Roman or gladiators, they have an English accent. For an audience, it is an easy trick to hook people in. ↗
The transformation scene, where man is becoming insect and insect has become at least man and beyond that - a flying, godlike, shimmering, diaphanous, beautiful creature. ↗