What will happen if you collect seven Crystal Stars?

What is the goal of Grodus, the leader of the X-Nauts?

What is the legendary treasure that waits behind the Thousand-Year Door?

What does Sir Grodus wish to do with this ancient demon's soul?

What is required to seal up the demon again?

This is a recreation of Questions TEC-XX asks the player in Paper Mario: The Thousand-Year Door. Photo credit to Mario Wiki and for listing all of these questions.