Actor Jeffrey Dean Morgan is no stranger to comic book adaptations. In addition to playing The Comedian in Watchmen and Negan on The Walking Dead, he also played Thomas Wayne in the flashback sequence at the beginning of Batman V Superman: Dawn of Justice. In fact, he liked the role of Wayne so much that he's interested in playing him again -- or at least a version of him.
As it turns out, Morgan would like to play the Flashpoint version of Thomas Wayne when season 3 of The Flash adapts that storyline. This would let him don the cowl of a much darker version of Batman, one who unleashes lethal justice on the criminal element that he blames for the loss of his son.
During an appearance at Denver Comic Con, Morgan was asked by a fan if he would be interested in reprising the role of Thomas Wayne on the small screen when The Flash takes on Flashpoint. His response brought a round of cheers from the audience, as he made it clear that he would gladly take the role:
"Man, I would love to play that Batman… It would be very cool. Flashpoint would be very cool."
Morgan explained that he had actually tried to become more involved in the DC Extended Universe, asking Zack Snyder for a larger role in the DC movies. Given that Thomas Wayne's fate has already been shown onscreen, though, it's unlikely that there will be much room for him in future DC films unless Ben Affleck's Batman film or one of the Justice League movies works in an earlier flashback. If Morgan was going to reprise the character again, The Flash might be the best place to do it.
Of course, given the separation between DC's films and its television properties there isn't much of a chance of this happening. Arrow has already been stopped from using some of its major villains from earlier seasons due to the launching of the DCEU, so it's unlikely that The Flash would have free rein to not only include a version of Batman in the show but to also use the same actor that played the character in a DCEU film. Supergirl is adding Superman, though, so anything is possible. If they did pull it off, you have to wonder if The CW would also try to use Lauren Cohan as the Joker (since she played Martha Wayne alongside Morgan in BvS).
It's more likely that we'll see a darker version of Oliver Queen filling the role that Batman played in the comics, especially since some argue that he's more Batman than Green Arrow on the show anyway (even though he shouldn't be). Using Oliver instead of Thomas Wayne might even be the better choice, since Barry wouldn't be able to deliver the famous letter at the end of Flashpoint since he doesn't know Bruce Wayne in Arrowverse. Though if the CW and FOX want to get together and bring Gotham into the fold... but that's definitely asking too much.
The Flash season 3 will premiere Tuesday October 4 at 8pm on The CW, Arrow season 5 will premiere in the same timeslot on Wednesday October 5, Legends of Tomorrow season 2 on Thursday October 13, and Supergirl season 2 on Monday October 17.