Writer Eric Wallace confirmed that the former Justice Society member would appear in his new title for DC Comics' relaunch, though he would not say what her role would be or whether she retains her superpowers.
"The biggest element of Mister Terrific that I couldn't talk about before involves Karen Starr," Wallace told Newsarama.
"Her appearance in the series was supposed to be a surprise. Readers were supposed to open up our first issue in September and go, 'Whoa! Karen Starr? What's she doing here?!'
"So you can imagine my shock when a fan told me he already knew about her presence in the book during a DC panel at SDCC. I was so stunned that I asked the fan, 'Uh, how did you know about that?!' Apparently, somehow word had gotten out the previous day. Oh, well. That's Comic-Con!
"But you know, it's probably for the best. Keeping that secret was really driving me up the wall.
"Of course now the question is, what will Karen's involvement be in the book? Sorry, no spoilers here. Beyond confirming her presence as an integral part of Michael's journey, I can only say that you'll have to wait for issue #1 to find out how it all begins."
Mister Terrific was the only former member of the JSA to receive his own title in the 52 title relaunch.
A Justice Society project from James Robinson and Nicola Scott was recently announced. It will be set in the alternate Earth-2 reality.
Mister Terrific will debut on September 14.