A boy wearing a muffler. Wants to become friends with Guest. Has a cheerful and energetic personality. Loves making discoveries and wants to be a detective. Wears goggles on his head.

Gentle and kind to everyone. Fell in love with Guest at first sight. Loves flowers, especially roses; his house is full of them. He has a flower over his right eye and flower motifs on the edges of his clothes. Basically, a total flower fanatic.

Loves chemistry. Wants to be friends with Guest. Wears a blue muffler and has blue eyes. Often fails his experiments, but succeeds sometimes too. Has a kind personality. His house is overflowing with experimental equipment.

Has black hair styled in a side part. Wears glasses. Very serious.