Julia Goodway (previously known as Justina Goodway) is the daughter of Gustavo Goodway. She has a twin brother named Julius. She is also the niece of Mayor Goodway and the great-great-great-great-great-granddaughter of Grover Goodway.
Julia is a young girl who presumably lives in Adventure Bay with her father Gustavo and fraternal twin brother Julius. She frequently appears with her brother as a background character. She and Julius 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 Frog Jumping Contest.
Julia is much like her brother, sharing the same interests. She and Julius usually say things in unison and they're never seen apart. She's just as cheerful as him.
Julia has brown skin and brown eyes. She has short brown hair in odangos (two buns; one on each side of her head). She wears a purple T-shirt with a flower on it. She also wears blue pants and purple shoes.
Here is a gallery of Julia's attires throughout the series.