Kelly Macdonald as Helena Ravenclaw
Yes, you’re not hallucinating. We already saw The Grey Lady/Helena Ravenclaw on this list but summed up the fact that the old Helena never played it past Harry Potter and the Sorcerer’s Stone. Kelly Macdonald, brought the character back to death (because she’s a ghost) for the returning appearance of The Gray Lady in The Deathly Hallows: Part 2.
Although it’s not exactly what she had planned, Helena Ravenclaw helped Harry take down the Dark Lord, by revealing the history behind the ‘lost Diadem’ that she had taken from her mother when she ran away from home. The same Diadem that Voldemort had turned into a Horcrux.
Shefali Chowdhury as Parvati Patil
Well obviously you didn't think we would have Padma on this list without her twin sister Parvati, did you? Out of both of the Patil sisters, Parvati is the true Gryffindor in the movie. Her bravery and courage are clear to us, especially when she is asked to accompany Harry to the Yule Ball, only to have him ignore her completely while sulking over Cho Chang.
Through the entire evening, Parvati manages to keep her cool and not display her anger at the inconsiderate adolescent boys. She also proves her worth through her talents in Divination class, and during the Battle of Hogwarts.
Shefali Chowdhury Now
Just like her on-screen twin sister, Shefali Chowdhury landed her Harry Potter role while she was still at school. She, too, never thought she would be accepted for the part.
Soon after, she was all settled in on the Harry Potter set, and became lifelong friends with co-stars Afshan Azad, Bonnie Wright, and many others. Sadly though, Shefali hasn't appeared on the big screen since her debut in 2015.
Kelly Macdonald Now
It's fair to say that Kelly Macdonald's appearance in Harry Potter and the Deathly Hallows was not exactly the largest role ever. That being said, she did manage to use the, albeit small, platform given to her by the franchise in order to showcase her acting talents and make a name for herself. Since her time on the Harry Potter set, Kelly has landed roles in some major Hollywood movies.
In recent years, she starred as the nanny in Goodbye Christopher Robin, and appeared in No Country for Old Men and Holmes and Watson, along with another Harry Potter cast member - Pam Ferris.
Fiona Shaw as Petunia Dursley
Vernon and Petunia Dursley are the horrible distant relatives that Harry was forced to live with after losing his parents on that one fateful Halloween night. OK, maybe not so distant. While being the sister of Lily Potter, Petunia Dursley could not be more different from her sister. It seems that while Lily was a kind-hearted witch, her sister, Petunia, was a self-centered muggle who had little to no interest in the Wizarding World, and even less so towards her reluctantly adopted son, Harry.
Although Petunia does at least agree to take care of The Boy Who Lived after Lily and James Potter pass away, she spends most of her time using him for her various house chores, and as a punching bag for her spoiled son, Dudley.