Unlocking Jack Skellington in Disney Dreamlight Valley isn't as straightforward as a lot of the other characters you'll meet during your time in the valley. Unlike characters like Simba, Moana, and Woody, Jack Skellington doesn't have his own realm to visit. Because of this, you'll need to do a little more work toward getting him invited.
To start the process of unlocking Jack Skellington, make sure you have Olaf and the Fairy Godmother unlocked and their initial friendship quests completed. You'll need to have the Forgotten Lands biome unlocked. To do this, you'll need to spend 7,000 Dreamlight on unlocking the Sunlit Plateau, and then an additional 15,000 for the Forgotten Lands which are tucked right at the back next to Scar's Cave.
