Zhou is the brother of Boquin, they aren't twins, but their birthdays are about 11 months apart. Zhou isn't as willing to do risky and dangerous things as Lien and Boquin are, but if it means to protect them he'll do it. Other than dangerous situations, he's pretty easygoing in normal day life, he's also very easy to make fun of, which is why Boquin would pick on his a lot. His voice pitch is medium, think of Sokka from Avatar the Last Airbender and Callum from The Dragon Prince.