I don't have any issue with CG creating a character from thin air, just as long as they add to the lore. He's not a main character, but him just "being there" on Endor would be pretty lame. A couple o...
I think captain inclusion is cool. I'm pretty sure I remember seeing him in the background burning down the forests of endor with his flame thrower while attacking the shield generator, reinforcing the empires propaganda that the rebels were trying to deforest the moon. Those terrorists.