Marcel the Monkey from Friends Remember Ross's mischevious (and illegal!) black and white capuchin monkey Marcel on Friends? Turns out, Marcel is still alive and makes an appearance in the upcoming TV show, Y: The Last Man. The monkey, whose real name is Katie, is in her mid-20s, and she has acted and appeared in modelling shows since her days delighting fans on the set of the iconic '90s sitcom. Image Source: Everett Collection