Ginny Weasley
Background
Ginny Weasley is a witch from house Gryffindor and student at Hogwarts School of Witchcraft and Wizardry. She is the daughter of Mrs Weasley and Mrs Weasley, and her brothers are Percy Weasley, Fred Weasley, George Weasley and Ron Weasley.
During the events of Harry Potter and the Sorcerer's Stone (2001) played by Bonnie Wright
At the train station, Harry Potter hears Mrs Weasley complain about Muggles and he follows her, Ginny Weasley, Percy Weasley, Fred Weasley, George Weasley and Ron Weasley to Platform 9 3/4. Percy goes first, followed by Fred and George. Harry asks Mrs Weasley for help and she explains how to disappear into the wall and come out at the proper platform and Ginny wishes him luck.
During the events of Harry Potter and the Chamber of Secrets (2002) played by Bonnie Wright
Ginny runs downstairs and stares wide eyed at Harry and then runs away. Mr Weasley walks into the house and tells everyone of the nine raids he conducted and then meets Harry. Mr Weasley is asking Harry questions about non magic users when Errol flies into the window with a piece of mail. Percy takes the letter which includes all of the children's Hogwarts letters, including Harry's. They travel to Diagon Alley using Floo Powder. At Flourish and Blotts, Lucius Malfoy insults Hermione Granger and her parents and Ron and his siblings and grabs Ginny's second hand book and calls Mr Weasley a disgrace to wizards and puts Ginny's book back, plus another into her cauldron pail. The Weasley's then go to the train station and teleport through platform 9 3/4, except Ron and Harry, who are last. During her first year in school, she opens the Chamber of Secrets and is eventually brought inside by Tom Riddle. She later wakes up and Fawkes sheds a tear on Harry's wound, neutralizing the venom. Fawkes then flies her, Harry, Ron and Gilderoy Lockhart back to the surface. Those who were petrified recover, including Hermione, who is welcomed back by Ron and Harry. Before the end of the year feast, Dumbledore asks for a round of applause for Professor Sprout and Madam Pomfrey and all of the students and professors clap, including Madam Pince. Hagrid returns and everyone gives Hagrid a round of applause.