Why is Roxas called ven in Kingdom Hearts Birth by Sleep?

Answer 1

Roxas and Ven are the same people, at the end of birth by sleep Ven asked Sora if he could keep his heart in Sora. So throughout all the other kingdom hearts games that Sora was in Ven was inside of him (just like Kairi in the first game). when he became a heartless, and a nobody ven's heart became Roxas.

Answer 2

sora let ventus into his heart twice to save him and the second time supposedly sora kept his heart or a large part of it. At the end of kh 358/2 days roxas cries which hints that he does have a heart, most likely ventus which would explain the look of him.

That's the theory I believe, but you'd be surprised at how much controversy there is over the Roxas = Ventus theory.

Answer 3

first off that is not kh3 I guess you mean Kingdom Hearts Birth By Sleep.

2nd that is not Roxas but Ventus. Ventus lived before Roxas/Sora. Roxas looks like Ventus because Sora has part or whole of Ventus' heart and when Sora turns into a heartless Roxas still has Ventus' heart in him, which makes him look like Ventus and not Sora.