Board Thread:Speculation House/@comment-27883360-20160305074527/@comment-103.51.115.209-20161106050021

I imagine that his semblance has either been there but used very subtly, or it's too powerful for him to use in the situations we've seen him in/had drawbacks. That would explain why we don't know it after 3 seasons.

One possibility is that is semblance is Tranquility - to keep a calm mind and straight focus in the most dire of situations. It could be just his personality to be level-headed, but take Blake for instance. She's a very calm and level-headed person, much like Ren. Except unlike Ren, we have seen her express emotions while on the battlefield. Usually she fights with a straight face, but we have seen her quite often seem to be clouded with anger, like when she fought Torchwick....both times.

But Ren on the other hand, hasn't really been seen expressing much emotion in or out of combat. It could also be just because the poor guy doesn't have enough screen time for that (</3) but I honestly think that even with his type of personality, he would've shown some sort of fiery determination by now. But all we've seen is him dead-set on a target and extremely focused at all times, meaning that this could be a possibility. While it sounds like a useless semblance, if he never let emotions or anger get in his way, it'd be so much more powerful than you think. He wouldn't be swayed to the bad side or manipulated into doing things, he'd never let fury blind his senses while fighting, and nothing would go unnoticed. While it is subtle and less game-changing, it could actually be extremely useful.