The werewolf seen in the horror movie opening is a recycled version of the character model for Noble's werewolf from Beast Machines: Transformers (1999).
This is the first CGI-animated movie for the "Casper, the Friendly Ghost" franchise. As well as Universal Studios Home Video's first-ever CGI-animated release.
In 1999, despite Harvey Entertainment selling the characters' rights to different studios, Amblin Entertainment were still allowed to have the rights to make sequel to Gasparzinho, o Fantasminha Camarada (1995), with or without the leading actors. And a script was written by Simon Wells. But in 2000, after the critical backlash and underwhelming video sales on Gasparzinho, como Tudo Começou (1997), Gasparzinho e Wendy (1998), and later O Natal Assombrado do Gasparzinho (2000), the studio was convinced to cancel plans for a "Casper 2". But in 2022, it was announced by Universal that a reboot series for Peacock was in development.