Secretary-General Ban Ki-moon has named Red, the starring animated character in the soon-to-be released "The Angry Birds Movie," as an honorary U.N. ambassador to encourage young people to go "green" and step up action to tackle climate change.

The U.N. chief told a launch event Friday attended by hundreds of young people in the General Assembly hall that "the Angry Birds have entertained millions of people around the world — and now they are part of making the world a better place."

Ban said there was no better way to mark the International Day of Happiness on March 20 "than to have our animated ambassador raise awareness about the importance of addressing climate change to create a safer, more sustainable and happier future for all."