Who is the Norse God of Thunder in the Marvel Universe?

Thor is Loki's brother have the opposite Character but at the end Loki became good

We had a Great Dane called Thor when I was a child. He was terrified of thunder and refused to go out if it rained. Once he spent the night in my mum's Mini Cooper because it started raining before we got home and he refused to get out and walk one metre to the front door.

The mythology was there way before Chris Hemsworth but that's Ok. I got a Marvel question right.