Where is Axel from Kingdom Hearts from?

Answer 1

Roxas did indeed have a heart, and Nomura heavily hinted that it might have been Ventus' heart, that was freed when Sora unlocked his heart and gave birth to Roxas, and that relocated itself inside Roxas to keep recovering.

Answer 2

When Axel was an actual person he must have had a heart, but he is a nobody and therefore has no heart. We are led to believe that he has a heart because of his affection towards Roxas, but this must be caused from prolonged exposure to Roxas. More might be explained in the upcoming title of the Kingdom Heart series; Kingdom Hearts Birth By Sleep.

(Please. No spoilers. Wait until Kingdom Hearts Birth By Sleep is released.)

Answer 3

Axel's Somebody, lea, grew up in Radiant garden, until he lost his heart. Then he lived in The World That Never Was as Axel.

Answer 4

I think Sora's heart was strong that Roxas had a heart...I guess