Dewey Percy is a newcomer at the Mana and Magic Research section. He is a tsundere and has a rocky personality, but is actually very thoughtful and caring.

As he lived alone, he had always been lonely, although he is unaware of the fact. He hates relying on other people, and would stubbornly refuse assistance. According to Katarina, he looks like an adorable puppy when he greets someone or when he follows Maria around.

(Source: Destruction Flag Otome Wiki, edited)