We can't believe it has been five years since Grimm premiered, introducing audiences to the hidden world of Wessens.

Fast forward and premiere of the final season of the NBC series is fast approaching. So before you say goodbye to Nick, Monroe and all the creatures from your favorite fairytales, let's take a look back to where it all started.

Click through the gallery below to see how much the cast has changed since Season 1! And be sure to tune into the Season 6 premiere on January 6 at 8 p.m.