@SeraphimDawn
 
The one from the first Trailer https://derpibooru.org/827979 shown here in a comparison picture where I made my speculation first.
 
@Background Pony #0A11
 
Yes that is also very possible, but I’m giving Hasbro the benefit of the doubt and say they aren’t likely to spoil the ending to the season premiere.

@SeraphimDawn
 

@Background Pony #0A11  
Would explain why they got their marks back.

@IceKitsune
 
Maybe this could be near the end of the two-parter after saving the ponies and restoring their cutie marks. This could be the final confrontation between the mane 6 and the villain.

@IceKitsune  
Which creepy smiling one?

The one stallion with the curly mane, and the other with the purple scarf are freakin cute. Cute little girly ponies.

I’m going to reitterate a guess I made earlier, assuming the white pony with skis is not the same a the creepy smiling one that was behind Rarity; they might be some kind of resistance group or something to that effect. As they haven’t been caught by the Equal Cutie Mark thing yet.

I hope we get to see another fight. But this time with the entire Mane 6 party involved in this boss battle.

@PonyPon  
I don’t think she’s a common unicorn she’s probably at a more advanced level of magic based on this.

@Background Pony #542F  
If Equestria ever gets invaded by another Pony nation who are allied with a few non-pony races, I’d have a reason to imagine a C&C Red Alert Hell March cinematic.

@SeraphimDawn
 
I didn’t count Sunset Shimmer since I was talking about the show. The show has mostly given as big, dark or scary villains, but hasn’t given us a villain that looks like a normal pony.

@Background Pony #542F  
That would be nice.

Wouldn’t be surprised if she’s just an underling to the “true” pony running things, setting up the finale villain as well as some more minor events during the season.

@SeraphimDawn  
Besides that doctor dude in Daring Don’t, earth ponies are too pure hearted. And I don’t know what to tell you about pegasai.

@Mr. Horrible  
Or shadowbolts as pegasi villains.

@Background Pony #0A11  

 
<applause>

@SeraphimDawn  

 
Mane-Iac was an earth pony, if that counts.

@Background Pony #0A11  
Unless you don’t count Sunset Shimmer. But then again… she spent 99% of her appearance in the human world as an ape instead of her alleged unicorn self.
 
Seriously. I wonder what will happen to this unicorn after they inevitably defeat her?
 
Or is she really not a pony, but something that disguised herself as one? I wouldn’t be surprised if this is supposed to be a transformation scene where she shows her true colours.
 
And when will we ever get a pegasus and earth pony villain/antagonist?

I wonder who those four other ponies are?

@RIG
 
Honestly, I’m kind of glad we are getting a villain that looks like a normal pony. Makes a change from the “This character is evil looking” types we normally get from the show.

Their heads are turned 180 degrees backwards.
 
Ouch.

@PonyPon  
is just she looks too lame to be a villain, she is a freaking recolor! of course, that maybe not is her true form.

@RIG  
Were you under the impression she wasn’t the villain?

well, she is truly the villain, the villain with the most lame look of all, unless that is not her real form

@RIG  
They’re as eager as we are.