Nikki here is a bird
well a boy too
he's a boy in a birds body
because his parents (a king and queen) were so worry he'd get hurt they made a shaman turn him into a bird
so he could never leave well it worked but he did escape and was founded by veva (a monkey girl) and whom they became best friends and also to them brother and  sister.
Nikki has a big brother trope and is always worried about veva getting hurt but when they have a plan together nothing can stop them