I wouldn't be surprised if in the end, we don't learn anything about G's real identity or links to Q. After all, the whole point of Q is "he's a mystery and we're not going to say anything about him", so the best thing to do is to do the same with G. "Is he the same guy or not? Myyyyysteryyyyy!"
I didn't care for G in the reveal, but the reveal looks really good. Q+Suija's bubble is a combination I didn't know I wanted.
I also love that Capcom is the only company that keeps adding weirdo characters like it was the 90s. When all the other fighting games try to attract players with a gallery of "cool" and beautiful people or improbable crossovers, SF5 has FANG, Abi and G. Keep fighting the good fight Capcom.