gonna go with fatboy. theyve been hanging out with each other since they were godlings. balder was not really part of the crew (thor & warriors 3). cap and herc, he hasnt known as long as volstagg and balder. plus herc tried to steal his main squeeze in the past.
I'll go Steve Rogers. Steve has like no powers and yet Thor would still follow him to the ends of the earth.
__________________ Quotes from Hia8:
"I claimed that the science is sometimes faulty."
"You don't understand. This is fiction. That means none of this stuff really happened."
"There is no writer to purposely ignore a character's natural ability just because it suits the story."
"in some cases because the writer knows that Character A will dominate Character B easily and refuses to allow this to happen for the sake of the story."
I think Thor has the most respect for Captain America not necessarily his best friend. I'll go with Volstagg on that but he definitely admires Captain America for being a mere mortal willing to take on tasks that the mighty Odin would be concerned about without a second thought.