i was wondering what would happen if sora turned into a nobody again whould Roxas be some other personality or what would happen the second time around

i think roxas would come back because axel tried getting roxas back by turning sora into a heartless again hoped it helped a bit

Well, no Roxas would not come back. But it's not going to be possible to see him again. Nobodies are just beings with an empty shell. They don't trully exist. Roxas was only born when Sora sacrificed his heart for Kairi. And in KH2 Roxas found Sora in namine's sleeping chamber and became one with Sora again. So it is unlikely that Roxas will come back

ok but roxas didn't die or anything he is just inside of sora.. so that wouldn't really do anything...

Indeed, plus Roxas and Namine agreed that they'd be able to see each other when Sora and Kairi are together. So.....yeah. Roxas isn't gone, just inside Sora.

I think if he did turn into a Heartless again, Roxas would probably come back, because he never technically 'died', he just went back inside of Sora. So he probably could come back, but I don't think he would become one again.

Roxas and Sora are technically one in the same:

 

Roxas = Sora's body + soul

Sora = complete being

In kh2 when sephiroth and cloud where fighting when they dissapeared they went to the realm of darkness

In kh2 when sephiroth and cloud where fighting when they dissapeared they went to the realm of darkness

 

1. Relevance?

2. No, they didn't. They disappeared, yes, but not to the Realm of Darkness, just...somewhere that's not Radiant Garden.

i think it was a planet with similar themes to clouds planet( even though this isn't part of the conversation ) but roxas would come back right?

Probably. Sephiroth's originally from Olympus, maybe they went there?

 

Back on topic, I personally don't see Roxas making a physical return in the future since freeing him from torment wouldn't involve that, but if Sora were to become a Heartless again, he'd probably be reborn.