A Oncer asked Mader if she has any advice for surviving the episode, and the actress responded by writing, "Buckle up for safety!" If you don't want to know how this short message might be a spoiler, then stop reading now!
Rebecca Mader's tweet might scare the spots off of poor Pongo, because it looks like she's going to be playing Cruella de Vil. In case you don't recall, Cruella's driving was extremely erratic in the "101 Dalmatians" movie, so this might be why Mader is telling fans to buckle up for safety. It's already been revealed that Mader's villain character has her own theme music, so this is another hint that she's going to be playing Cruella.
If Cruella de Vil does appear on "Once Upon a Time," it will be interesting to see if she gets to drive a cool car like she does in the movies or if she lives in Fairy Tale Land where she's completely clueless about what an automobile even is. Mader's villain character will reportedly have some sort of history with Regina, so it seems more likely that she'll be from the Enchanted Forest. But how will she know Regina?
Here's an interesting idea: Maybe the ladies are related somehow. Series cocreators Adam Horowitz and Eddy Kitsis told TV Line that Henry's family tree will grow by two spaces by the end of season 3, and they weren't including his great grandfather, Peter Pan, as one of the two new family members. So could Cruella be a half-sister of Regina or something? According to IMDb, Regina's father is set to appear in this Sunday's "Going Home" and a January episode titled "The Cricket Game," so maybe Oncers will get to meet Cruella de Vil in a flashback. Another theory is that Cruella might be Rumple's mother, which would make Rumple even more sympathetic—it's probably hard to be good when your parents are two of the most evil people on the planet.
If Cruella is the new big bad on "Once Upon a Time," there are some things that Oncers would absolutely love to see. The show could explain her stylish two-toned hair (the result of a miscast curse, perhaps?), and "OUAT" might finally treat viewers to Pongo's back story. Is his Perdita out there somewhere?
So if Rebecca Mader is Cruella de Vil, would you like to see the villain as a relative of Regina?