Julius is a young boy who presumably lives in Adventure Bay with his father Gustavo Goodway and fraternal twin sister Julia. He frequently appears with his sister as a background character. He and Julia are often seen playing with Alex and the other children, or participating in local events like the Adventure Bay's Easter Egg Hunt or competitions like the Frog-a-palooza Contest.
Julius is much like all the other kids. He usually seen with and speaks in unison with his sister when he has a speaking role. He and Julia think alike and they tend to be on the same page. He is just as cheery as his sister.
Julius has light brown skin with short brown hair and brown eyes. He wears a blue Polo-style shirt with an orange collar. He likes to play soccer and is exactly the same height as his sister and other kids like Alex.
In Season 6, his skin was made darker to match that of Julia's.
Here is a gallery of Julius' attires: