User blog comment:Zolnir/Ozpin: The Age Immortal Headmaster/@comment-25045079-20140826002032/@comment-11188061-20140826003228

Everything is possible, but there's absolutely no sign of such a Semblance in RWBY-verse yet. Dust fusion with the body is already confirmed however. Moreover, we know from experience that Dust is somehow closely tied to one's soul.