While the first picture only included one book, Batman: Earth One, his second photo featured a huge pile of Deathstroke comics from seemingly every era.
The book takes place in an alternate version of the DC universe that features Penguin as the mayor and Alfred as a battle-hardened ex-Marine.
We don’t know a whole lot of firm details about the upcoming solo Batman movie directed by Ben Affleck, but some of the pieces are starting to come together.
On Tuesday, Joe Manganiello took to his Twitter account to post a couple of photos showing off his research materials for the role.