Across the 10 seasons of Friends we were treated to an amazing array of characters.
From those who appeared in almost every episode to guest stars who graced our screens in only one episode, we were treated to some amazing actors.
From the very beginning of the show we were lucky enough to see big names make guest appearances. ER star George Clooney and Hollywood mega star Julia Roberts made appearances in some of the earlier series of the show. Later seasons saw Brad Pitt and Winona Ryder make one episode guest stars.
How big a fan are you of Friends? Can you work out which season a particular guest appeared in? Only the biggest fans of Friends will know what series of the show Jill Greene appeared. Do you know what season Pete Becker whisked Monica to Italy and then trained to become the Ultimate Fighting Champion?
We've put together the ultimate quiz on Friends characters who only appeared in one season. Will you manage to get every question correct? Let's find out!
Don't forget, all the answers can be found at the end of the quiz. Good luck!