Adam and Sam

The relationship between Adam Milligan and his half-brother, Sam Winchester is a generally close one. Like Sam, Adam shares a common interest of studying and longing for a normal life. Sam was the last Winchester to meet Adam since he was still away at school when Dean first met him. After his mother's death, Sam and Dean took Adam in and taught him the rules of hunting, Sam focused more on the research and technical aspect of hunting and also made it a point to teach Adam the regular schoolwork he had. After Dean's death in 2006, Adam and Sam became closer to each other. When Dean returned in 2007 after being resurrected by an angel, the brothers' relationship resumed like there had been no interruption.