In partnership with Warner Bros. Pictures on the heels of their new film Birds of Prey (And the Fantabulous Emancipation of One Harley Quinn) Burger King will flame-grill memories of your ex and turn them into flame-grilled Whopper sandwiches.On 14 February, scorned lovers in New York City, Los Angeles, San Francisco and Boston can bring a printed photo of their ex to Birds of Prey-themed “breakup boxes” at select Burger King restaurants, to be exchanged for a Whopper. Guests in New York City can also bring in letters, stuffed animals or a specified piece of clothing to claim their reward.And the mayhem doesn’t stop there. Harley Quinn is also taking over an entire Burger King restaurant in New York City, proclaiming it officially “Burger Quinn.” From the store-front windows and marque to the ordering queue and even the bathroom mirrors, Harley’s havoc can’t be missed with her signature graffiti and irreverent style. She’s even managed to pull together her very own limited-edition, hot pink #BurgerQuinn crown.For those who don’t live near a “breakup box,” Burger King is also launching an in-app quiz, giving participants a chance to get a $3 Whopper only via the BK® app. The quiz will feature five questions, and in order to be eligible for a Whopper guests must answer four out of five correctly.CreditsClient: Burger KingGlobal Chief Marketing Officer, Burger King: Fernando MachadoGlobal Communications Lead, Burger King: Diego SuarezAdvertising, Media and Communications Lead, Burger King North America: Marcelo PascoaDirector, Media and Digital, Burger King North America: Jorge OliveiraCommunications Manager, Social and Digital Marketing, Burger King North America: Flavia GuetterManager, Mobile App, Burger King North America: Preston NixSr. Manager, CRM, Burger King North America: Dhanya BalasubramanianAgency: MullenLowe U.S.Chief Creative Officer: Mark WennekerExecutive Creative Director: Tim VaccarinoExecutive Creative Director: Dave WeistSVP, Creative Director: Enrique CamachoAssociate Creative Director: Cody DummerAssociate Creative Director: Marco MartinsAssociate Creative Director: Sarah CristArt Director: Sara McLawsCopywriter: Wilsynn WheatDigital Producer: Chris BaddersPrint Production Director: Aidan FinnanSenior Production Artist: Nat NovakArt Producer: Tracy MaidmentSVP, Group Strategy Director: Mike CassellStrategist: Byron MorganSocial Content Writer: Arielle MulgrewCommunity Manager: Katie NisbetSenior Business Affairs Manager: Amy KeddyAssistant Project Manager: Morgan PlayleSVP, Group Account Director: Kerry McKibbinAccount Director: Alison WhisenantAccount Executive: Leila Chee