One Harry Potter actor, more so than Emma Watson, challenged Daniel Radcliffe to keep up with her knowledge of the Wizarding World.

Despite being known for her discipline on set and her diligence, Emma Watson surprisingly wasn’t the Harry Potter star who intimidated Daniel Radcliffe the most. According to the actor’s interview with EW in 2007, as Radcliffe reflected on the new cast members of Harry Potter and the Order of the Phoenix, he mentioned living in fear of Evanna Lynch.

Daniel Radcliffe, Evanna Lynch, Emma Watson, along with the Harry Potter cast | Warner Bros.

Joining the billion-dollar franchise with no prior acting experience, Evanna Lynch donned the role of Luna Lovegood in the films. However, following her admission to the cast, Lynch not only brought a new dimension to the beloved franchise but also had a surprising effect on her co-star Daniel Radcliffe.

Daniel Radcliffe was Intimidated by Evanna Lynch’s Knowledge About Harry Potter

Even though fans and the Harry Potter actors had become accustomed to the familiar faces on set, when Evanna Lynch joined the cast of the billion-dollar franchise in Harry Potter and the Order of the Phoenix, she quickly became a standout member of the team. Blending in as one, Lynch flawlessly portrayed the role of the unique character Luna Lovegood.

Perhaps her deep-rooted knowledge of the Harry Potter lore helped her smoothly transition into the character of Luna Lovegood and bring a new dimension to the franchise, despite no previous acting experience. However, although her knowledge enhanced her performance on one hand, it simultaneously had a surprising effect on Daniel Radcliffe.

Evanna Lynch as Luna Lovegood in Harry Potter and the Order of the Phoenix | Warner Bros.

According to Daniel Radcliffe’s interview with EW, the actor opened up about how Evanna Lynch’s fervor for the Harry Potter universe left a significant impact on him. Describing Lynch’s presence on set as both inspiring and intimidating, Radcliffe, who played the iconic role of Harry Potter throughout the series, admitted being conscious around the actress.

She’s a huge fan. But she got on set and knew her lines, and she was really focused. It was bizarre because I sort of had to watch my mouth around her. If I’d ever say something about Potter that was sort of incorrect, she would leap on it.

Although Daniel Radcliffe had previously expressed his his fear and respect for Emma Watson, his newfound intimidation because of Evanna Lynch, simply highlighted the actress’ dedication and commitment to understanding every nuance of the Wizarding World.

Evanna Lynch Rectified Daniel Radcliffe’s Limited Knowledge About Harry Potter

Further, during the interview, Daniel Radcliffe, who had been living and breathing the role of Harry Potter for years, recalled getting the need for being more vigilant about his knowledge of the series, around Evanna Lynch. Recounting instances where Lynch’s meticulous attention to detail became apparent, Radcliffe mentioned the profound impact she had on him.

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For Daniel Radcliffe, Evanna Lynch’s thorough knowledge came as a reminder of the importance of accuracy and dedication in his craft, which he previously recounted learning from Emma Watson. But more than anything, Lynch’s presence on set came as a challenge for Radcliffe, based on her fan fervor and professional focus.

Daniel Radcliffe and Emma Watson in the Harry Potter franchise | Warner Bros.

Any sort of little detail about something, like, maybe if we were talking about family trees, who was in the Sirius Black family tree or something like that. If I said something wrong or I got a name wrong, she would hone in on it, because she knows it all.

So it seems, Evanna Lynch’s role as Luna Lovegood was more than just another character in the saga; she was a fan who had become part of the story she loved. But moreover, her in-depth understanding of the books that had a ripple effect on Daniel Radcliffe, highlighted her passion and respect for the magical world that J.K. Rowling crafted meticulously.