Rang-i's cheerful and playful personality is expressed through one of his teeth. Unlike the title "Tiger," he is a character with a pure and quirky charm, and he is an irresistibly lovable character with a variety of expressions. He is moody but simple-minded, so he quickly forgets his moods.

Gomi was designed with soft brown and ivory tones to reflect her calm personality. With her round and cute appearance, she is a very methodical and rational character, so she tends not to show much change in expression. She has a warm heart and often soothes Rang when she is sulking.