Protagonist
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Character Role Analysis
Thor
When the film's title consists of one name, it makes our jobs every so much easier in this department. Thor is the hero because… well because it's his movie.
His name's on the title, he does the most growing and changing, he gets to save the day at the end, and he even gets the cute girl who's been following him around for most of the film.
Protagonist? Just look for the guy with the lustrous blonde locks.