I'm trying to get caught up on my back issue reading after not buying comics for a year or so (been super busy). I love the new Batman Who Laughs character and I'm trying to get all of his appearances. I have all the Metal Hardcovers and the tie-ins, plus The Batman Who Laughs hardcover.
I know there have been more stories and was wondering what I'm missing. And if so, is it out in collected format? Thank you.