The marmosets are first seen stealing shiny objects from tourists, then they appear in the forest celebrating their new founds. Nigel then forces them to find Blu and Jewel and threatens them: if they fail to find the two blue macaws, they will all be forced to take "flying lessons" from him. They search for Blu and Jewel and find them at the birds' samba club, and have a fight there, birds vs. monkeys. They however lose the fight. Nigel finds them later and asks what happened. At the end of the film, Mauro takes a photo of a plucked Nigel.
Personality and Traits
The marmosets are mischievous and are attracted to shiny objects. They are also smart, knowing how to use phones and using jewelry for other uses. Nigel is the one who made them antagonists, so in reality, they were only been forced to be enemies from Blu and Jewel.