how is bobby related to sam and dean
Bobby Singer Bobby makes his debut in the first season finale "Devil's Trap", and is revealed to be an old friend of the Winchester family. Sam and Dean Winchester seek his help when their father John is kidnapped by demons. From his extensive collection of supernatural-related literature and resources, Bobby shows the brothers how to create a devil's trap—mystical symbols capable of rendering a demon powerless—and later assists in the exorcism of the demonic Meg Masters.[2] After John's death in the second-season premiere, Bobby allows the brothers to stay at his home to rest up and rebuild the recently-crippled Impala.[3] He continues to assist them when they require additional expertise in their hunts, rescuing a demonically-possessed Sam and dealing with a Trickster.[4][5] In the second-season finale, Bobby helps Dean to locate a missing Sam, but they both watch in horror as he is fatally stabbed in the back.[6] Bobby begs Dean to bury Sam, and is distraught when he learns that Dean has sold his soul to a demon for Sam's resurrection. When the hunters learn of the demon Azazel's plan to open a Devil's Gate—a gateway to Hell—they rush to stop him. The gateway is temporarily opened, releasing hundreds of other demons into the world, before Bobby and Ellen Harvelle close it again.[7]