Jo

Jo is a mysterious figure of divine or eternal origin published by Boom Studios, making her debut in Batgirl #31 (2014). Her introduction during this era of Batgirl stands as a notable moment for collectors tracking the evolution of the title's supporting cast, as characters with godlike or eternal backgrounds carry a certain weight in long-term storytelling potential. Though details surrounding her history remain sparse, her classification as a god or eternal being immediately sets her apart from the street-level characters typically found in Batgirl's world.

Her defining trait is her intellect, a power set that places her in fascinating company alongside some of comics' greatest minds. Characters whose strength lies in raw cognitive ability rather than physical force often prove to be the most compelling antagonists, allies, or wild cards in any narrative — and Jo's eternal nature only amplifies the intrigue. A being of limitless time and godlike intelligence is a storytelling powder keg waiting to go off.

For collectors, Batgirl #31 (2014) represents the key book to track down. First appearances of characters with divine or eternal origins have a strong history of appreciating in collector value, particularly when the character's story remains largely untold — leaving room for future writers to expand on the mythology. The 2014 Batgirl run itself is a beloved chapter in the character's history, making back issues from this era consistently sought after.

Whether Jo is destined for a larger role in future Boom Studios storytelling or remains a hidden gem of the 2014 Batgirl run, her first appearance book is a smart addition to any collection focused on undervalued keys. Collectors who enjoy getting ahead of the curve on characters with untapped potential will want to secure a sharp copy of Batgirl #31 before the broader market catches on.