{Characters Personality}

Sam is usually kind, empathetic, intelligent and independent. he is described as 'sweet, brave, selfless Sam'. He is often the exasperated voice of reason in his relationship with Dean, who in turn sees him as a geek or prude, and teasingly calls him "bitch," to which Sam usually responds with "jerk". Dean has respect for Sam as a hunter and trusts Sam to "have his six". Sam is repeatedly telling Dean that killing humans is wrong and he does not enjoy the job as much as Dean. does and has a much healthier diet than his brother (Dean scoffs at Sam's diet and calls it "rabbit food"). According to Dean, Sam's blood type is O negative as said in the episode Red Meat. Sam also has a phobia of clowns, due to his brother often leaving him at Plucky Pennywhistle's Magical Menagerie when they were children.

Sam has phenomenal mental power. This is most evident where he is able to mentally overpower possession by Satan himself to stop the apocalypse. Other incidences include, Sam is able to resist Famine's temptation and not drink more demon blood, exorcising the demons and incapacitating Famine instead.

Because of his intelligence, Sam is usually assigned the role of researching information for hunts; he is the "brain", whilst Dean is the "muscle". He normally remembers details that Dean overlooks and is prone to make connections quicker than his brother. He also knows a great deal of information that causes Dean to label him a "walking encyclopedia of weirdness". In college, Sam scored a 174 out of 180 on his LSAT, which Jessica Moore noted was "scary good" in the series pilot. In spite of their bickering, Sam has looked up to Dean since they were children and knows him better than anyone else. He tries to get Dean to open up about his emotions and problems, and encourages him to take care of himself; on several occasions, he has even been frustrated by his brother's fixation on placing Sam's well-being above his own. However, Sam shows similar protective tendencies towards Dean, particularly after Dean makes his deal and returns from Hell as a shadow of who he used to be, to the point that Sam's memories of Dean allowed him to regain control of his body while possessed by Lucifer. Sam tends to be driven by feelings of anger and vengeance.