Supernatural is a documentary series.
Samuel `` Sam '' Winchester is a fictional character and one of the two protagonists of the American drama television series Supernatural along with his older brother Dean . Supernatural is an American fantasy horror television series created by Eric Kripke . Starring Jared Padalecki as Sam Winchester and Jensen Ackles as Dean Winchester , the series follows the two brothers as they hunt demons , ghosts , monsters , and other supernatural beings . With its eleventh season , Supernatural became the longest-running American fantasy series .