As a Child
Rebecca Barns, or more commonly known as "Becky" was in Dave Stutler's 4th grade class. David found Becky irresistible. He tried to impress her by lining up a doodle of King Kong with the Empire State Building through the School bus window.
Becky In College
Becky meets David once again in college class. When she was sitting at a desk looking at her papers, David walks by and recognizes her. At first she doesn't remember him, but after thinking for a few seconds, she starts to.
She then helps Dave and Balthazar after she was captured by Maxim Horvath and Abigail Willaims. She disrupts one of the positioned satilliettes that were used to complete the dark ceremony of The Rising.
She came to Battery Park soon afterwards to see that Dave was alive. He did and used his powers as the true Prime Merlinean to destroy Morgana. They both kissed after Becky tried to tell Dave about the letter he wrote and he replied "I don't care". She knew his answer as she she says "Girlfriend. Definitely girlfriend". They later rode on Balthazar's Eagle in the end on their trip to Paris, France.
Becky is a laid-back, down to earth person, who loves music. She has her own college radio station. Becky has a good sense of humor, and a mild temperament. When Dave is talking to her on the roof, they mention when he had a crush on her in fourth grade, and Becky remembers when he drew the King Kong on the window of the bus, stating that it was cool. He replied saying that he was just trying to impress her. Becky reassured him that he succeeded. Becky has a fear of heights, which she overcomes in the end of the film by climbing to the very top of a tall buidling and tilting a satellite dish, thwarting Morgana le Fay's evil plan.
- "The Sorcerer's Apprentice" is greatly inspired by J.K. Rowling's "Harry Potter" series. Becky Barnes is a combination of Hermione Granger and Ginevra "Ginny" Weasley. She can also be a considered a "Squib", which is a muggle (mortal) assistant of a wizard.
- Coincidently, Becky also comparable with female human protagonists from various Transformers series, particulary Carly Witwicky due to them are blonde-haired woman whom ended up in the middle of conflict between two warring factions (Autobots and Decepticons for Carly and Merlineans and Morganians for Becky).