Arius' appearance is identical to Zeref Dragneel. He is a young man with short black hair and dark eyes. He wears a dark-colored suit and tie alongside a vertical striped dress shirt underneath his coat. He also has a light-colored messenger bag that he carries on his right shoulder.
Arius has a helpful and friendly nature where he returned Mio's handkerchief that he found on the floor as well as telling her about her missing shoes.
Alvarez Empire arc
Arius sneaks into the event meant for Lucy Heartfilia due to him being a fan of her work. Later on he ends up meeting Mio which lead to them becoming friends.