Hiyokobull 

The chick and Bull : The perfect pair with opposite sizes and personalities. They are always together, no matter what.

Usapan-san 

Owner of Usapan Bakery. She is like a warm mother to Hiyokobull.

Taeko-chan 

While chasing Hiyokobull, she became as their best friend. Hiyokobull always gives her emotional support and understanding.