Quiz

Cathy Moriarty, who plays Wendy's aunt Gert in this film, originally played the role of villainess Carrigan in Casper (1995).

Ben Stein is the only actor to appear in all three "Casper" movies.

Hilary Duff's movie debut.

Both Casper - Un fantasmagorico inizio (1997) and this film are not set in the events of Casper (1995), and are considered non-canon.

Before Desmond creates the Mystic Abyss, he says, "From the halls of Kugaluma to the shores of Xanadee..." This is taken from the first line of the US Marines Hymn: "From the halls of Montezuma to the shores of Tripoli..."