Weslie (Traditional Chinese: 喜羊羊) is the leader of the young goats. He wears a blue ribbon with a bell around his neck as well as blue sneakers. He is Slow Goat's assistant. Happy Goat is very intelligent and clever, and in almost every episode he is the one who mercilessly foils the plots of Wolfie. He is also a very fast runner.
Weslie is able to brainstorm ideas instantly by jumping several times. This often seen in episodes when he is trying to figure out how to stop Wolfie's plans.
He has also been shown to occasionally play pranks on his friends. It was later revealed that his parents were alive and working on a faraway planet.
- His bell has special abilities in the third movie.