in reality.They usually have an anime art style, a “kawaii desu” oc, and they have a small voice when they talk. (Not all uwutubers are like this, this is just an example of a stereotypical uwutuber.)Comes from the words uwu and youtuberTL;DR: A youtuber that tries to act cute.
Person 2: Isn’t that the uwutuber?
Uwutuber: T-This game is weally good.