Trivia

He usually makes cameo appearances in his father's movies: he is the baby in the jumper in Muertos de miedo (1996), a Hobbit child in El señor de los anillos: La comunidad del anillo (2001), a young Rohan refugee in El señor de los anillos: Las dos torres (2002) and a Gondor child in El señor de los anillos: El retorno del rey (2003).

He's the first son of director Peter Jackson and screenwriter Fran Walsh.

Older brother of Katherine Jackson.

Billy never wore a wig when he filmed his cameo in the first Lord of the Rings cameo.