Namine makes Sora her protector
Roxas should be with Namine. Because Roxas is Sora's Nobody and Namine is Kairi's Nobody, because Sora and Kairi's hearts of connected the sort of connects Roxas and Namine.
Namine's powers......well let's see Namine has the power to make new false memories and bring memories, that are lost back.
Namine was never born, she is a Nobody, hence she was created by magical means and has no birth to speak of.
Namine
No he does not.
Namine could control the memories of anyone inside Castle Oblivion.
Namine is Kairi's Nobody. She was created when Kairi's heart went into Sora in the beginning.
Namine, Kairi's Nobody, was created when Kairi lost her heart, while Roxas, Sora's Nobody, was created when Sora lost his heart. Because Kairi's heart was in Sora, Namine could control Sora's memories. Namine can take anyone's memories.
Namine
Nobody
Namine