Who's that famous voice in the trailer for the new Tinker Bell movie?

Pop-culture seems covered in J.M. Barrie’s fairy dust right now, what with NBC’s live stage-musical of Peter Pan scheduled for Dec. 4. Fans of Disney’s Tinker Bell series can also mark their calendars on March 3, when the seventh Tink film—Tinker Bell and the Legend of the NeverBeast—arrives on DVD and Blu-ray. In the latest animated adventure, the peace and calm of Pixie Hollow are disrupted by a mysterious beast that strikes fear in the hearts of some of the fairies—but not Fawn, the brave and sweet animal-lover who looks past the NeverBeast’s frightening exterior.

In the exclusive new trailer, see the razor-toothed creature that has Pixie Hollow on edge. And meet Nyx, the scout fairy determined to protect her friends from any and all dangerous threats.

Mae Whitman returns as the voice of Tink, and the cast also includes newcomer Ginnifer Goodwin (Fawn), as well as returnees Megan Hilty (Rosetta), Lucy Liu (Silvermist), Raven Symone (Iridessa), and Anjelica Huston (Queen Clarion). Also joining the Pixie universe for the first time is Rosario Dawson, who voices Nyx.

“She’s a protector, she automatically looks for where the danger is,” says Dawson. “She’s got her little crew and they kind of operate almost like a little SWAT team. She’s not a bad guy in any sense, but she can be really tough. It’s not necessarily what you always thought about with Tinker Bell, you know, where it’s like thinking about your favorite happy thought and really sweet.”

Dawson knows a little something about playing tough characters, and she greatly enjoyed the extensive character collaboration that had Disney writers and animators drawing on her own mannerisms and personality. “I love the whole Tinker Bell land, and I love bringing some action to it,” she says. “They did a screening of the film, and the kids really loved Nyx. One of the quotes was, ‘She’s the kind of character that will fight until the fighting is done,’ which I just thought was awesome. How we tell stories, especially to girls, has really evolved, and some of these characters now, these women, are a lot tougher than they used to be for young girls. We had Sigourney Weaver in Alien when we were younger—but those were adult films. Now more younger fare are also starting to really show those characters, so this is really exciting to be a part of that transformation for young girls.”

All true and important, but Dawson admits to also being motivated to join the Tinker Bell franchise for two other, slightly less altruistic reasons. One, so her young godchildren could see a version of her in a movie that was made for them rather than the more-grownup fare for which she’s better known. Also, she’s playing the long-game on a what being a Disney favorite could mean: “I’m also finishing up Daredevil, and Disney owns Marvel, so I hope that means at some point I’ll be able to get one of those lifetime passes to Disneyland,” she says. “Basically, doing both projects is all just a big ruse to make sure that I can go at any point in time.

Directed by Steve Loter (Kim Possible) and produced by Makul Wigert (Secret of the Wings), Legend of the NeverBeast arrives March 3.