Captain Levi is one of the most popular character in the series. He's not very approachable and tends to be always very composed and showing little to no emotion, but that doesn't mean he doesn't care about all those around him. He has no problem questioning authority as he only listens to the people he trusts.

We are trying to stay true to the anime, so please check out his English Dub Voice: https://youtu.be/aFfWcx9ntKQ?t=7m24s