Princess Fiona

Princess Fiona is the wife of Shrek in the Shrek movie series. She was cursed by a witch (believed to be the Fairy Godmother) to become an ogre by night, and human by day. She was then locked up in the highest room of the tallest tower by the Fairy Godmother, who promised that her son, Prince Charming, would rescue her one day. Her curse was broken near the end of the first film after she kissed Shrek, and ended up becoming a full-time ogre.

Shrek
Lord Farquaad was told by the Magic Mirror that he must marry a princess to become king, the Magic Mirror then showed Lord Farquaad three princesses, Fiona being one of them. Farquaad ends up choosing Fiona. He then holds a Knight tournament, whoever wins the tournament gets to save Fiona from the dragon's keep. Shrek shows up shortly after to scold Farquaad for banishing the fairytale creatures to his swamp. Farquaad then sends Shrek on a quest to save Fiona, which leads to Shrek meeting Fiona.

Fiona sees Shrek falling through the roof of the tower, and pretends to be asleep when Shrek approaches her. Shrek shakes Fiona and after confirming who she is, grabs Fiona's arm and starts to run out the door. Fiona encounters Donkey and is surprised that he can talk. Shrek offers to distract the Dragon while Donkey and Fiona continue to escape the tower. Shrek and Donkey succeed in saving Fiona. Fiona is very happy, and calls Donkey a Noble Steed, and Donkey Fiona insists on seeing Shrek's face, Shrek is hesitant to take his helmet off at first, but eventually does after Fiona insisted. She is surprised to see that Shrek is an Ogre, and got confused and angry. She then calls Donkey 'Shrek's Pet' Shrek tells her that it was Farquaad who sent him to rescue her. Fiona then says that if Farquaad wants to rescue her, then she will be waiting for him right here. Shrek then picks up Fiona and and puts her on his shoulder and starts walking. Donkey then asks her a series of random questions while they are walking. Fiona realises that it's getting dark, so she demands to find shelter to sleep for the night to hide her ogre form. She wakes up and signs with a bluebird, and accidentally blows it up due to her singing to loud. She cooked the bird's eggs for Shrek and Donkey, to apologize for what she said yesterday. Monsieur Hood and his Merrymen show up and Monsieur Hood kidnaps Fiona. Fiona defeats all of them with her fighting skills, much to Shrek and Donkey's surprise.