Wyldstyle, real name Lucy is the deuteragonist of The LEGO Movie. In the movie, she is a "tough as nails" and tech-savvy fighter who is one of the Master Builders.
Wyldstyle is one of the Master Builders who help Emmet save the Lego world from Lord Business who intends to use a powerful relic called the Kragle to glue everything where it stands. At the end of the movie, she becomes Emmet's girlfriend and they hold hands.
Wyldstyle is determined, independent and no-nonsense Master Builder. Sometimes she can be sarcastic and even rude, especially towards Emmet, but she is still a kind-hearted person who genuinely wants the best for the world.
While seemingly confident, Wyldstyle is really insecure, to the point she always uses nicknames to hide her real name (Lucy) and even reveals that she wanted to be The Special at one point.