Emerson Esposito was created by Dan Jurgens and first appeared after the DC relaunch of 2011. She was an ally of the Justice League International and the assistant of Andre Briggs.
Mayor Story Arcs
The Signal Masters
For more infromation see: The Signal Masters
Emerson Esposito appeared as the assistant of Andre Briggs and was with him as the Justice League International was created. She was always excited about the prospect of an every man's superhero team. She was with Andre when he learned The Hall of Justice was destroyed and when the JLI went missing. She was there when they returned and when they went to the UN for approval. Emerson was also there when the UN was bombed and she was killed.