Blitzkrieg's first appearance is in Catwoman #66 where she kidnaps, binds and gags a young girl named Amanda and gloatingly explains over a live web-stream that she plans to execute her; proclaiming that she is the "newest, baddest, latest, greatest villain in Gotham". Holly Robinson (as Catwoman) manages to infiltrate her hideout and, after a brief scuffle, knocks Blitzkrieg out before she is able to harm the child. The villainess regains consciousness shortly after, but is quickly incapacitated once again by Detective Lenahan.
Blitzkrieg has a smaller role in Catwoman #67, appearing briefly where Selina Kyle (as Catwoman) swipes her gloves in order to defend herself against Sickle and Hammer. Her method of attack comes from a pair of expensive gloves, that she bought from a crazy all-female terrorist cell, which project explosive flame blasts from her fingertips.