Dr.samual hayden is your robotic companion in your campaign against the raging armies of hell. on your journey you'll encounter: Imps,Cacodemons,Revenants,cyber demons and many mote hellish denons! you are the doom slayer (john doom) a marine from mars. Backstory: While john was on mars his commander ordered him to leave his troops behind and evacuta himself. Now,john being a good marine of course helped his troops fight back but ended up wounded,arriving in hell to fight the cyber demon. Now in doom eternal you have to fight the maruarder before being introduced to him. (sorry for long intro)