Martha

Martha and her husband are the foster parents for Jubilation Lee.

Biography
When Martha found out her husband had registered Jubilee because she was a mutant she became angry. Soon after, Henry Peter Gyrich came asking about those who rescued Jubilee at the New Salem Mall. Later, Scott Summers came looking for help finding her. Eventually Jubilee was rescued and she went off to the Xavier Mansion to join the X-Men and learn to control her powers.

Background
Martha's voice actress was not credited.

She is original to the series. In the comics, Jubilee was in an orphanage following the murders of her parents and never in foster care.