Snowball is a charismatic and fearless white rabbit who plays a significant role in the animated movie series 'The Secret Life of Pets'. Initially, he is introduced as the leader of 'The Flushed Pets', a group of abandoned animals plotting to take revenge on humans. Despite his small size, Snowball is known for his energetic and rebellious nature, often leading daring escapades. As the series progresses, his character evolves from a villainous figure to a more heroic role, showcasing his ability to care deeply for his friends and stand up against injustice.