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. ↗
I am trying to make my accent so it won't bother anyone, but I am not going to drive myself crazy trying to pretend I am an American girl when I am from Colombia. ↗
In Delaware, the largest growth in population is Indian-Americans moving from India. You cannot go to a 7-11 or a Dunkin Donuts unless you have a slight Indian accent. I'm not joking. ↗