She might be. I don't know where she stands on the "royalty scale" - Goddess (like Palutena), a Queen, or a Princess (like Peach, Zelda, Lucina,
).
Her role at the end of
Super Mario Galaxy seems to indicate god-status.
EDIT: Can Samus be considered a princess? GameInformer put her on a list of the most kickass princesses, and explained that she was the last survivor of the Chozo, so she's kind of royalty.
So Bowser and Ganondorf are both Kings, but what about Marth? I've seen him referred to as a Prince and a King. Bowser Jr.
are also Princes.
#SakuraiBias for royalty.
Where does Villager stand if we go by
New Leaf lore? He's Mayor, but he wasn't elected. Dictator?.