 <translate> The important part for answering this question is: Developed by series creator Eric Kripke, the character is mainly portrayed by Jeffrey Dean Morgan.
So, the final answer is John Eric Winchester. <yor> Apakan pataki fun idahun ibeere yii ni: Ti dagbasoke nipasẹ oludasile jara Eric Kripke, Jeffrey Dean Morgan ni o ṣe apejuwe akọkọ. Nítorí náà, ìdáhùn tó gbẹ̀yìn ni John Eric Winchester. 