Calhoun is the surname of a video game family that resides in Litwak's Arcade.
Fix-It Felix, Jr. (character)
The curse to become a glitch is a curse done by Turbo to Vanellope von Schweetz before the events of Wreck-It Ralph (film).
It would cause the victim to become a glitch and thus an outcast. It allows the victim to glitch anywhere.
Vanellope von Schweetz (cast by Turbo).
This blog post was inspired by one of the Disney Princesses asking Vanellope if she had been cursed and a few fans asking if being glitch is a curse.
King Candy von Schweetz was the King of Sugar Rush until Turbo killed him, assumed his identity, usurped his throne and made the king's daughter, Vanellope von Schweetz, a glitch.