Margaret is the wife of James Power
, an inventor who once made a device which (unbeknown to them) could destroy large parts of the universe. The alien race known as the Snarks
came looking for the device and thus came into conflict with the Power Pack
kids, whom had received amazing powers from Whitey
, an alien who died trying to warn the Power family of the nearing danger. Margaret never found out that her children were not where in fact superheroes, but had hinted at it sometimes. In the early days, the kids where unsure wheter or not to tell their parents that they had powers now. Especially July was in a moral dillema thinking that her mother and father wouldnt love her anymore and think of her as a freak if she told them about her powers. When July asked her mom, Margaret if she would love her no matter what, Margaret replied that "she would love her, even if she would start flying" (witch ironically was July's superhumanpower.)
At one time both Margaret and James found out about their children, but their memory was erased by Mirage, a member of the New Mutants during the Inferno crossover. Margaret remains a loving parent to her children and a good wife to her husband James. She is a professional painter and illustrator.