Pym
In theory? Also the whole biologically can't, nope, not explaining that to a tween Lyra isn't Betty's daughter, though. She comes from an entirely other world than you or I do.
I've heard a bit about that from James. But the Entity that brings us here sometimes gives us really cool things and recently it let me choose to have full control over Him. So even when I am him, I'll still be me.