In We Bare Bears, Grizzly Bear, commonly referred to as "Grizz," is one of the three main characters. He is the eldest of the bear brothers and serves as the group's enthusiastic and outgoing leader. Grizz is a brown grizzly bear known for his energetic, friendly, and optimistic personality, often diving headfirst into new adventures or trying to bring people together.

While his intentions are generally good, Grizz's impulsiveness and desire to be popular or cool can sometimes get him and his brothers into tricky situations. Despite this, his caring and protective nature always shines through, especially when it comes to his brothers, Panda and Ice Bear.

Grizz is often seen as the heart of the trio, with a warm personality that complements the more reserved nature of his brothers. His character adds to the charm of We Bare Bears, making him a fan favorite for his humor, positivity, and loyalty.