Jealously is a bitter root and the heart of many a foul deed. And this often brings out the worst in a person, in their disposition, in their decisions, in their actions. Such an insidious emotion was that which consumed two women in twin universes, which caused two Batmen trouble.
Poison Ivy was Pamela Isley, a former university student with an expertise in botany who turned to crime when she was jilted in love by her duplicitous course instructor. She first made the scene in Earth-One's Gotham City by calling out three women for their meager criminal endeavors compared to her own. These women, Dragon Fly, Silken Spider and Tiger Moth, were led into a trap which also ensnared both Batman and Robin, until the Dynamic Duo turned the tables on her scheme. She would return.
Catwoman was Selina Kyle, a divorcee who was jilted out of her spousal support when her abusive husband cast her out for protesting. Seeking to steal from those who like her husband were both wealthy in money yet poor in heart, she began a long running adversarial relationship with the Dynamic Duo of Earth-Two. When author Neil Weston pens a book detailing the criminal careers of various female rogues, Kyle feels slighted when she herself is left off the list. Seeking to sabotage the production of a film based on this book, Catwoman continues to perplex actress Gala Kazon in her portrayals of the Delilah, the Wicked Witch and Circe. However, Batman and Robin eventually captured her. She ultimately married the object of her affection, former foe Bruce "Batman" Wayne.
While such tales never occurred with the Selina Kyle of Earth-One or Ivy's Earth-Two counterpart Flora Styles, time and circumstance could get the best of any... man or woman, young or old, good or evil... if they allowed jealously to get a foothold into their hearts.