Fox has said during an interview with The Times, on the topic of being a role model that: "It depends on what your idea of a role model is," and continued with, "If your idea of a role model is somebody who’s gonna preach to your kids that sex before marriage is wrong and cursing is wrong and women should be this and be that, then I’m not a role model. But if you want your girls to feel strong and intelligent and be outspoken and fight for what they think is right, then I want to be that type of role model, yeah." Fox said in the same interview, on the topic of being type-cast that: "Getting typecast as what? Attractive? How bad is that?" She feels that it isn't a bad thing to be type-cast in this way and considers it to be flattering. She also believes that it gives her an advantage because people will not expect her to be more than simply attractive and when she does give a good performance, people will be surprised. Fox has shown interest in portraying a character less sexualized than that of Mikaela Banes, whom she portrays in the Transformers film series.
Fox said of being a popular media topic that, though she is not on the same level as Jennifer Aniston, Britney Spears, or Lindsay Lohan, she does find it difficult and that there have been times when people have avoided being around her because they do not want to end up in the media's spotlight. "I need to behave in a way and handle myself in a way that will cause people to take me seriously," she said, "[and] you can be sexy and be intelligent and be taken seriously, or you can be sexy and you can be out at clubs every night and not be [taken seriously]" but that she has not gone "completely insane." Fox also said of going from being "relatively unknown" to her current celebrity status that: "I definitely feel ill-prepared; I mean, I don't know if anyone ever sits back and goes, 'Now is the moment that I think I should be a famous celebrity,' – but I definitely feel it's premature. I mean, I was in one movie that people have seen."
Fox has appeared on the covers of many magazines. In 2007, she appeared in Maxim; in 2008, the list had grown to include Cosmo Girl, Paw Print, Jack (ITALY), FHM (UK), and GQ. In 2009, the list includes, USA Weekend, Esquire, Empire, Maxim, GQ (UK), Entertainment Weekly and ELLE. Fox was ranked #17 on interview magazines Hollywood faces to watch "Future Stars of Tomorrow", ranked #16 on the Maxim magazine Hot 100 of 2008 list, named #68 in FHM magazine's "100 Sexiest Women in the World 2006" supplement, ranked #18 on the Maxim magazine Hot 100 of 2007 list, she was ranked #1 on Moviefone's 'The 25 Hottest Actors Under 25' in 2008, and was ranked #2 on the Maxim magazine Hot 100 of 2009 list in 2009. FHM readers voted her the "Sexiest Woman in the World" in 2008.
In late July 2009, Fox's overexposure in parts of the media caused several men's websites to boycott her. AOL's man-blog Asylum dubbed August 4, 2009 "A Day Without Megan Fox" with the promise that the site would not mention or feature her on this day; they asked other men's sites to copy this stance, and several (such as AskMen.com, Just a Guy Thing, and Banned in Hollywood) complied. "Listen, we love Megan," Eric Rogell of TheBachelorGuy.com told New York Daily News. "She's responsible for driving more eyeballs to our sites — just by getting photographed walking down the street in a white T-shirt — than any other celeb alive. [But] it's time to give another young actress a shot at the attention." In response to this, Fox told magazine Nylon, in a September 2009 interview, that "the media blitz" for Transformers resulted in an over-extension of her welcome in the media. "I was part of a movie that [the studio] wanted to make sure would make $700 million, so they oversaturated the media with their stars," she said. "I don’t want to have people get completely sick of me before I’ve ever even done something legitimate."
On September 11, 2009, an unsigned letter from crew members of Transformers defended Michael Bay against accusations made by Fox. The letter alleges that Fox is unpleasant to work with on set and makes several accusations of ungracious behavior that are at variance with her public persona. Bay defended Fox and has said that he does not "condone" the letter. Anthony Steinhart, a production assistant who worked on the Transformers, has also came out in her defense, stating that he had never "...witnessed Ms Fox being rude or inconsiderate of people’s feelings or the work to be done".