Marlo's hair is in the style of a bowl-cut. He wears the typical Japanese middle school uniform.
Marlo is a very righteous person. He wants to join the student council in the hopes of making the school a better place and seems to have a mutual liking for cats.
Following the student council scandal, an election for a new president is held. Marlo laments the corruption in the council, saying he had joined so he could reform it. Hitch humors him, asking if she should recommend him for president, and he contests the idea of becoming one.
In the school's 104th festival, Marlo visits the cat café and has himself surrounded with cats. He is surprised to see Hitch there as well after she bumps into him, telling her that he did not realize she loved cats. Hitch denies, saying she is trying to show animals who the boss is, then talks down to a cat in front of Marlo, before she hurriedly runs to buy meat snacks for it, with Marlo remarking that the cat indeed knows who the boss is.
- Hitch Dreyse - As a fellow club member, Marlo and Hitch appear to be on good terms. The two have a mutual liking for cats, though Hitch does not admit it to Marlo.