DuracellEnergizer said:

I'm still waiting for a rumour that says Kylo Ren is really a protagonist to show up. Every time it fails to make an appearance, I grow a little more jaded.

I can't back up the credibility of this rumor, just like with any other, but here you go :)

Kylo Ren is actually a misunderstood character who saves the day.

He merely enjoys the outdoors and goes on frequent hikes into the woods.

In the teaser he wears a specialized black jumpsuit that is designed for optimal insulation in cold weather.

He packs light and always carries with him a Swiss army saber.

Just like any Swiss army saber, his has many functions. In the teaser, he's just about to use it for bushwhacking.

Soon afterward he discovers a helpless person on the frozen ground. That person is Luke!

Kylo also sees the creature that Luke was riding, already lifeless in the snow.

He then cuts open the corpse and stuffs Luke inside until they can travel to the nearest settlement the next morning (it's like poetry, it rhymes).

Kylo Renn saves Luke!