[Asgardians speak the Alltongue, so Thor barely notices the language switch (and his replies will probably be heard as Old Norse as well). He does, however, look horrified at what he hears. And then he looks angry.]

Arrogant I may have been once, but I would never commit such a barbaric act! This imposter will pay dearly for daring to use my name in such a way.

[The anger dies down a bit as he start to think about it more.]

A thousand years ago I was not even on Midgard. After the last great war with the Frost Giants, we rarely visited this realm.