Gina Dupain

 is Marinette's grandmother and mother of Tom Dupain.

Trivia

 * While a Brazilian news article for Season 2 wrote that Befana is the grandmother's name, a crew member later confirmed that the name was not entirely correct.
 * Befana is the name of an Italian old woman who brings gifts to children on Epiphany Eve (January 5th), which is similar to Santa Claus on December 25th in other countries.
 * Marinette's grandmother is another family member of hers who both premieres and gets akumatized in the same episode, which also happened in Season 1 with Wang Cheng.

Madre de Tom