Okay, so basically what we know is:
1) The Carver twins are confirmed to be playing Aidan and Ethan
2) They’re going after Isaac
3) Adelaide Kane is confirmed to be playing Cora
4) Cora is 17 years old
5) She has ties to the Beacon Hills werewolves as we already know
6) She’s been alone for a very long time and she’s tough as we also already know but I’d like to point out again that she’s only 17
7) She’s also hell-bent on protecting Isaac for some reason, so my guess is she’ll be working closely with Derek’s pack (obvs)
8) Felisha Terrell has been cast as Kali
9) Deucalion has yet to be confirmed
10) Ennis has also not been confirmed yet
11) We also have no idea as of yet who Meagan Tandy is playing (probably Ms. Blake), but she’s in the mix.
Now excuse me while I implode from excitement.