History
Tabitha Smith was among the mutant children that Cyclops' old friend Sarah took care of. As a mutant, few parents wanted to adopt her. She was eventually taken in, along with other mutant children, by Zebediah Killgrave, a local businessman. However, unknown to Sarah, Killgrave was secretly imprisoning and brainwashing the young mutants to become his personal army. Eventually the plan was exposed and Tabitha was rescued along with the other children, who went back to living at the orphanage with Sarah.[1]
Boom-Boom eventually moved to Genosha, where she was present for the Wild Sentinels attack.[2]