Muffin is Bluey‘s non-stop cousin who always speaks her mind. In this form, she's 25 feet tall, and a bit more chaotic than usual.

Muffin can be very loud and energetic no matter what. Due to her young age, she often has trouble understanding things like how to play charades the proper way. Muffin can also be a bit stubborn, especially when she doesn’t get her way.

Muffin is also omnipotent. Her way is the only way. She uses her powers very casually.