I think every character in the award-winning comedy, Modern Family is fantastic, but Gloria (brilliantly played by Sofia Vergara) has to be my favorite.

In an upcoming episode, we’ll meet Gloria’s mom named Pilar and sister named Sonia for the first time. They will appear in the 12th episode of the season. My guess is that it will have something to do with the pregnancy, since that’d be a pretty solid reason for them to come to visit. I can only imagine a lot of yelling and big personalities. “There’s a bit of a competitive relationship between Gloria and her sister that will be fun,” executive producer Christopher Lloyd told EW. “The mother is the formidable, domineering character in the family, and has a complicated relationship with Jay (Ed O’Neill). I’m not sure she’s ever completely accepted Jay, and they lock horns in the episode.”

The episode is titled “Fulgencio” and they begin filming it tomorrow (Monday). Other guest stars this season include Matthew Broderick, Jason Mantzoukas, and Shelley Long. Find out who’s playing Gloria’s mom & sister below.

Her mother, Pilar will be played by Elizabeth Pena (La Bamba, Rush Hour) and her sister Sonia will be played by Stephanie Beatriz (The Closer).