Cassima

Cassima is the daughter of King Caliphim and Queen Allaria of the Land of the Green Isles. She was kidnapped by the wizard Mordack sometime between KQ IV and KQ V. She helps King Graham find his family in KQ V and in the process, he rescues her. She and Prince Alexander meet for the first time and he falls for her, pretty hard. The good wizard, Crispin, sends her home back to the Green Isles, but as soon as she returned, she discovers that her parents had died.

In KQ VI, Alexander sees in the magic mirror that Cassima is locked in a tower and he must rescue her. He makes the journey to the Land of the Green Isles. There he discovers that Cassima's being forced to marry Alhazred, the royal vizir. Alexander is able to give her a dagger, just in case she needs it to protect herself. He is able to stop the wedding, and chases Alhazred to the top of one of the towers. There, Cassima's tied up. She's able to cut the ropes with her dagger, and then stab Alhazred in the shoulder while he and Alexander are sword-fighting. Alexander and Cassima are married soon after and are named the King and Queen of the Land of the Green Isles.

Cassima in the Unofficial Games
She was to be one of main characters in the cancelled game King's Quest IX: It Takes Two to Tangle. The events of the game have been adapted into a semi-interactive novelization.