At the Universal Studios Orlando you can meet Poppy and Branch from the Trolls movie. They also just recently added Guy Diamond; the silver glitter troll.
The Trolls all walk out together and dance a little before making their way to the picture area where Guy Diamond “farts” glitter. It’s hard to see straight on in the photo but the kids all think its hilarious. He only does it once at the beginning before any guest get to take photos so if you are wishing to skip this part don’t be one of the first in line and you won’t have to see it.
The Trolls meet and greet is not currently listed in the park maps like the others but they always meet between the ET ride and Spongebob store.