Atomica

Atomica is a villainous member of the Crime Syndicate, the evil Earth-3 counterparts to the Justice League, who crossed into the main DC universe as part of the Forever Evil storyline, allied with twisted analogues like Owlman and Superwoman.

Bursting onto the scene in 2013's Batman/Superman #3.1, Atomica is a Modern Age DC creation from writer Greg Pak and artist Brett Booth — and from her very first appearance, she's running in extraordinary company, sharing pages with the likes of Owlman, Superwoman, and Thomas Wayne Jr. Her presence across Forever Evil, Batman/Superman, and Detective Comics marks her as a figure woven into some of DC's darkest and most ambitious Modern Age storytelling. Five catalog appearances may sound compact, but in comics, it's often the characters who leave the sharpest impressions in the shortest space who are most worth seeking out.