Remember Sam Worthington in the movie Avatar? He portrayed the protagonist, Jake Sully.
Here’s a picture of the Sam Worthington as an injured Marine who finished his tour of service and will assume his brother’s avatar:
And here’s a picture of his Worthington’s Jake Sully avatar:
Playing a former Marine (is there such a thing?), Jake Sully filled the bill perfectly. His tall, blue avatar with titanium bones were perfect for Pandora, the planet he traveled to and where he spent time learning the culture.