Other versions of the character having been portrayed by Hunter Brochu ( toddler ) , Ridge Canipe ( child ) , Nicolai Lawton-Giustra ( pre-teen ) , Brock Kelly and Dylan Everett ( teen ) , and Chad Everett ( elderly ) .Dean hunts demons , spirits and other supernatural creatures with the help of his younger brother Sam and occasionally with their friends and father figure Bobby Singer ( deceased ) and , since season four , his best friend the angel Castiel.
Angel Castiel is Dean Winchester 's best friend .