>>106562155I think people overplay the silent protagonist traits. It's a big part to her character, yes, but she can work when she's more chatty. The games too (even, and especially, discounting Other M) also inform some small bits of personality beyond what the player inserts. Prime, Super, Metroid II (and especially the Samus Returns remake), and yes, even Fusion all give details on the character of Samus. They leave leeway for the player to come up with their own ideas for some things, but all of them show she's not as blank as people tend to imply.
Samus and Joey is probably the best example of this, as it focuses on her character as established through bits of in-game actions, the foundation from the (canon, I might add) first manga, and some fairly sensible guesses from the mangaka. The Samus of Samus and Joey is heroic, a longsuffering protector of the innocent, but one with little patience for reckless behavior. She's also fiercely independent, but will accept help when it's needed and will give credit where it's due. All things that fit in with the portrayal of Samus in the games.
Also OP, read Samus and Joey. 
