Okay, I always kind of liked this guy:
(Every good monkey needs a proper beard!)
...named after this guy:
(Emperor William II - I am sure it's an honor to have a monkey named after you.)
Lovingly, it even goes by the name of Saguinus imperor, and looking into tamarins, I realized you find all sorts of lovely versions:
Mr. Cotton-top tamarin goes by the name of Saguinus oedipus
EDIT: Suggested tamarin styling: