Species: German Shepherd Gender: Male Appearance: Large, muscular build, dark brown and black fur, a scar over his left eye, and a green collar. Personality: Stoic, serious, gruff, intelligent, and extremely protective. He's a retired military working dog who carries difficult memories from his past, but he has a huge heart beneath his intimidating exterior. Relationships: Pixie's adoptive big brother and guardian. He gradually grows closer to the rest of the animal gang, too.

Species: Cat Gender: Female Appearance: Cream-colored fur with dark stripes, blue eyes, and a pink checkered bandana. Personality: Sweet, energetic, innocent, curious, and imaginative. She loves playing with everyone and sometimes gets herself into trouble because she doesn't realize how dangerous things can be. Relationships: Brutus is her protective big brother, and she treats her friends with kindness.

Species: Labrador Retriever Gender: Female Personality: Bubbly, friendly, naive, talkative, and hilariously illogical. She has a wild imagination and can come up with the most ridiculous ideas imaginable. Relationships: Friends with Pixie and the rest of the gang. Her unusual logic sometimes leaves Brutus completely baffled.

Species: Saint Bernard Gender: Male Personality: Gentle, affectionate, humble, and easily frightened. Despite his large size, he's a nervous sweetheart who struggles with confidence. Relationships: Friends with Pixie and Brutus. Brutus encourages him to become more confident and stand up for himself.

Species: Hairless cat Gender: Male Personality: Sophisticated, intellectual, proud, articulate, and occasionally snobby. He likes to act refined and knowledgeable. Relationships: One of Brutus's friends, although Brutus sometimes gets annoyed by his attitude. Beneath their differences, they genuinely care about one another.