She is a Japanese expert in robotics, working for Koko and other companies (though she wanted to use her knowledge to make toys at first). She is also a butterfly fanatic and spend most of her time hunting them. She and Koko have a secret plan going on codenamed "Jormungand". (Source: ami)
Chiyuu is an artist and is friends with Birthday and Ratio. Her Minimum Holders is making her self blend with the environment like a chameleon. She can also make someone else turn invisible when they are near her. To active her Minimum, she has to say a color.
Nonomi is a character of the day who appeared in BW109. She is a new Trainer just starting out on her Pokémon journey and was on her way to Nuvema Town to get her Starter Pokémon from Professor Juniper. She is very anxious and fears that everything will turn out worse than the reality. (Source: Bulbapedia)
He is a prisoner who dreamed to be a mangaka and somehow choose Gin-san as his editor.
Head of the Hyo clan. His son has the same name.