Princess Stella Organa is both a main and playable character in the Angry Birds Star Wars game. She's Luke Skywalker's sister and Han Solo's love interest.
Her story is the same as the original Princess Leia, except that the game didn't feature scenes like seeing her home planet's destruction, getting rescued by her brother, kissing her brother, kissing Han Solo after falling in love with him and her conversation with Luke on Endor's Moon. In the begging of Moon of Endor, instead of bargain with Jabba The Hut, she breaks into his palace to free Han Solo until she gets caught and enslaved by him until Luke saved her again.
Stella, for the first time, is featured with a different ability than what she typically had in slingshot-based games (the bubble ability). Rather, she has a pink tractor beam whith which she can pull objects towards her. While this ability is weak at first, it grows stronger as the player progresses. Players can use this ability to pull a supporting block on a tall structure, causing it to topple over, sometimes onto other structures. It can also be used to attack pigs beyond the other birds' reach. However, if there is an object between Stella and the player's desired target, Stella will instead hit the object. It is also of note that all the characters in the game can activate their ability for a short period of time after they hit a structure, which can be used to the player's advantage. Body-wise, Stella is not very strong, just as she appears in prior Angry Birds games. Once again, she is unable to deal much damage, at best shattering a few blocks of glass and wood, damaging steel only slightly. If the player uses Stella's ability on the ground or other indestructible material, nothing will happen.