So Topps hasn't and looks like doesn't plan to release a real checklist for this set anytime soon. That being said Robin is in the main set so that means he has at least 4 cards in the set. Likely more and then also 2 parallels of those cards. I found this card was pulled in a case break not too long ago on the tubes. I'll post more images as I find them and a checklist with card numbering when that becomes available or known.
Base #/10, Gray #/5, Black #/1