Roar for Change
Credit: Lucasfilm

Since 1977, the sound of Chewbacca’s roar has been one of the most iconic sounds of the last century. From battle cry to that devastating wail, emulating the iconic Wookiee cry has become something of a national pastime. Well, it’s time to bring that noise public because Disney and Lucasfilm want us to put our Wookiee impressions to the test — all for a good cause.

This month, Lucasfilm and Star Wars: Force for Change are challenging fans to share their own take on the iconic Chewbacca roar to benefit UNICEF in a new initiative called — wait for it — Roar for Change.

Today through May 25th (hey, that’s the day Solo comes out!), Lucasfilm is challenging fans to post videos of their best Chewie roar to Facebook, Instagram, and Twitter using #RoarForChange. For each post, share, or like, Star Wars: Force for Change U.S. —Lucasfilm and Disney’s joint charitable initiative — will be donating $1 up to $1 million to UNICEF USA.

For those a *little* worried their roar isn’t up to prime Wookiee standards, participants can also create a Dubsmash using an iconic Chewie roar from a Star Wars film, or use a voice-changing Chewie mask like the Hasbro Electronic Chewbacca mask.

The cast and crew of Solo: A Star Wars Story kicked off the Roar for Change challenge with a hilarious Chewie-centric video.

While it seems Chewbacca can be a little bit of a diva, underneath all those layers of hair is a charitable heart.

To mark the beginning of the challenge, which launches on the eve of Star Wars Day, aka May the 4th, Lucasfilm and Star Wars: Force for Change have a whole slew of events planned during Roar for Change’s opening weekend. On May 3rd, fans attending Disneyland After Dark: Star Wars Nite will be invited to an exclusive event, while on May 4th, Chewbacca will be making a stop at the San Francisco Disney store to roar alongside fans.

Additionally, fans who post their on social media in Disney store locations across the country from May 4th through May 6th with #RoarForChange — or #RugirParaMudar and #RugePorElCambio — will receive 10% off a Star Wars purchase.

The Roar for Change challenge seems like the perfect way to put the spotlight on the iconic character, while raising money for an incredible cause. We can’t wait to see all the incredible Chewie impersonators living in our midst.