It had previously been suggested that Porcelain, a new member of the Secret Six comic from DC Comics written by Gail Simone, was a new transgender character for the DCU.
This makes Porcelain better defined as "genderfluid", not inclined to settle on one gender for a sustained period, but responding to their situation and state at a given time.
Genderfluid is a related term of transgender. As adjectives the difference between genderfluidand transgender is that genderfluid is not conforming to fixed gender roles while transgender is (narrowly|of a person) having changed gender identity from male to female, or from female to male.
Oh and as to that final comment from Damon Wells, Big Shot, it's all about the hat.
We do also get the return of original Secret Six member and gay character, also created by Gail Simone, Scandal Savage, who leaves her calling card.
And for those who, like us, are convinced that Big Shot is actually Ralph Dibny, The Elongated Man, in disguise, another clue to convince us…