Hal shows up briefly in the 1st issue and he makes a cameo in the end of the 3rd one I think, but he has little presence in the book so far. Quality-wise, the book is actually better than I expected, with the art being the weak link so far imo, but if you're looking to read more about what Hal's been up to recently, we pretty much have no idea because he doesn't really show up anywhere. He's apparently back on Earth now but we don't see him anywhere.