Sparky is Rigby's dog. He has yellow fur, messy blonde hair, perky fox-like ears with orange tips, orange patches on his paws, a long, bushy tail with an orange tip, walks upright, and on his front paws he has opposable thumbs. He wears a short sleeved orange shirt, orange jeans, orange sandals, and yellow glasses. His name is derived from his sparky appearence. His twin brother is Rain. Like the girls, he can speak Pig Latin.

Friends: Same as Dusty.

Enemies: Same as Dusty.

Personality: Loyal, friendly, sexist(only towards Quinn)

Love interest: Snowflake(one-sided on Snowflake's side)