 Up to the point the episode " August " aired , only one character that was part of a group known as " Observers " had been introduced . In this episode , two more such individuals were revealed : August ( played by Peter Woodward ) and December ( played by Eugene <unk> ) . The creation of Observers was one of the first ideas the writers of Fringe thought of when developing the show in its early stages , when they asked each other , " What if there were these characters where all they did was watch ? " . Pinkner and Wyman thought of creating Observers by " looking for something ... iconic " that had the " quality of being invisible " . Though the Observer called September has appeared in every single Fringe episode in a brief cameo , he was first featured prominently in the fourth episode of the first season . The producers thought of unique characteristics for " somebody who wasn 't of our world , " evolving to the Observers having bald heads , no eyebrows , and " largely <unk> " senses , which led to a love for extremely hot <unk> . 
