2. Not likely Mavado, I think he was deconfirmed by Ed Boon in a tweet long ago..
Boot does not resemble Kabal's, his had some designs on them last game.
Might be a new character. (Ed said there are new characters in this tease, so this might be one of them).
3. Shaolin. The foot looks kinda feminine if you ask me. I don't think it's Kung Lao (although I fucking wish), Liu Kang, or Fujin.
Could be a new character: female Shaolin monk?
Although whoever said the calf on the leg is too big to be a female, I hope you're right and it's either Kung or Kang.. We'll see.
4. Mileena. She's still very much alive. I think Kitana will return for MKX, but as DLC, that's why I call Mileena for this foot. And besides, it can't possibly be a new character, why would they introduce a new female ninja when they got 4 already? 2 of them being popular of all (Kitana and Mileena).
5. Jax.
6. Shinnok. How could anyone miss this? Clearly you can see some kind of staff next to the boot. Shinnok is in if Quan Chi is in. He will play a major roll in part of the story. Only other person it could be is maybe Ermac, but I doubt that.
Also, when the first time Ed tweeted the boot pics back in August, it said "These boots were made 4 walking"... the number 4 might represent how many of the characters are returning from previous games, and the 2 remaining could be new.