Mount & Blade. You can potentially become a king if you build up your income and an enough of an independant warband, but you can also spend the game as a mercenary captain for one of the other kings.
Freelancer mod is especially good for this if you want to just be a front line trooper for a while.
Arcanum In a way. You ARE the chosen one (because surviving the Zeppelin crash made you one. All the other pre-built characters are corpses), but it's complicated and elaborating that would be a huge spoiler.
Ryan Cruz
>Talking about religion no god in this house buddy.
Fallout New Vegas You are nobody special. You are just a skilled courier.
Asher Morgan
Pretty sure Toki the near-sighted knave didn't go down in legend.
Andrew Myers
Morrowind. You're technically the chosen one, as in the Empire chose you to go do some shit, but you MAKE YOURSELF the divine savior, it wasn't any fluke of providence.
Aiden Johnson
Oh shut the fuck up, everyone reading this conversation knows that Rogue Legacy doesn't have "just a nameless soldier" characters