I have found websites which describe all the other Batmen but not the giant cloaked Batman in the back, who is this Batman and what multiverse are they from?
6@Snow - I've just done a google search for that picture. For the record, Barbatos isn't mentioned at all in the first five results and while he merits a mention in the next three, there's nothing that confirms that it's him in that particular picture. You may be unaware of this, but Google provides individualised results based on search history and location so what's "immediately" available to you might be buried on page 7 for someone else.– ValorumApr 22, 2019 at 15:34
@Valorum the first result that I get from searching the image is this: dc.fandom.com/wiki/Dark_Knights_(Dark_Multiverse) since OP mentions in his question that they know all the other characters in that image, they could easily deduce whixh character was Barbatos from that link– SnowApr 22, 2019 at 17:23
4@Snow - and again, while that's just Jim Dandy for you, that result is 6th on my list.– ValorumApr 22, 2019 at 17:31
That's Barbatos, otherwise know as the Bat-God. He comes from the Dark Multiverse.