Arlo has light blond hair with a white and green hat on top of his hair. He wears a white long sleeved shirt with a pattern of sports on it. He wears long green pants as well. His traits are excitable, athletic and loves the outdoors. This means that Arlo likes to play sports while outdoors and is very hyper. In his biography, he is described as a "superduperextremehyperactive ball of youth" and he isn't happy if he has to stand still for too long.