Monroe Frankenstein

Monroe Styne (Frankenstein) is the father to Jacob,  Eldon, and  Cyrus Styne (Frankenstein), uncle to Eli Styne (Frankenstein) and appears to be the American branch family patriarch.

Season 10
In Shreveport, Louisiana Eldon Styne is getting chewed out by his father Monroe for being unprofessional and leaving a body and witnesses. Monroe threatens to turn his son into a lab rat unless he redeems himself by cleaning up his mess in Omaha and then tracking down he Winchesters. When Eli questions his uncle giving such important tasks, given his questionable judgment. Monroe brings up Eli's own issues, like having shirked his duties in tracking down Charlie Bradbury, a task that was passed on to him after Jacob's death. He orders Eli to report in with Eldon and back his effort before dismissing him.

Monroe is washing up and admonishing Eldon for his failure in killing the Winchesters and getting back the Book of the Damned. But when Eldon tells his father about the Bunker, and his plan to take some men and raid it for its contents, Monroe believes it is a good idea, and that Eldon will need a new arm. Monroe has Eli summon his youngest son Cyrus to the operating room, Monroe tells Cyrus that it's time for him to harvest his first body and unveils the bully who had been harassing Cyrus earlier. When Cyrus refuses, Monroe threatens him by telling his son that he will butcher the bully himself and then place Cyrus on the table to be modified. Monroe takes his son's hand and places a scalpel in it, and guides his hand as the blade cuts in the bully's chest. After the body had been harvested, and Eldon given a new arm, Monroe congratulates his son and allows Eldon and Roscoe to take Cyrus along to the Bunker.

When Dean makes it to the Styne Estate, he is surprised to see that Monroe had been prepared for his arrival with heavily armed men waiting in the home. After Eli knocks Dean out, Monroe had him taken to their operating room to be harvested for parts. While Dean tries to explain that the Mark of Cain won't allow him to die, will turn him into a demon, and everyone will die. Monroe believes Dean to have made a compelling case, however the thought of a man that doesn't die offers up a too perfect lab rat opportunity, and decides to proceed with the harvest. As Monroe is about to slice into Dean, Dean is able to get free and knocks Monroe down, and proceeds to kill Eli and the nurse assisting them. As Monroe is crawling to the door, Dean grabs a hold of him and drives him head first into the steel door before placing him in a headlock. As Monroe is being choked out, he tries to tell Dean that his home and family are gone, but is unable to finish before Dean snaps his neck.

Power and Abilities
Although he can be considered as a magic practitioners, his power and abilities are not shown much. Being capable to be head of American branch of Styne Family, he maybe the one of the most powerful magic practitioners in that family.


 * Body Enhancements - He has a certain degree of bioengineering skills and medical and surgical knowledge to harvest organs from his victims and implanted it to enhance himself to certain degree.
 * Enhanced Durability - As result of various body enhancements, he has certain degree of enhanced durability and presumably various enhanced physical attributes
 * Supernatural Knowledge - As one of senior members of the Styne family and leader of American branch family, he maybe has vast knowledge of supernatural things. At least, he know various Styne rituals. As he explain and shown to Cyrus about certain form of Styne "ritual of passage" to embrace him to harvest his victim for the first time.

Weaknesses
He has standard weaknesses of Styne Family.
 * Mark of Cain - He easily overwhelmed by Dean when Dean fuelled by the Mark of Cain powers and murderous rage.
 * Neck breaking - The only way shown to kill him among other ways. Dean killed him with breaking his neck.

Appearance

 * Season 10
 * Dark Dynasty
 * The Prisoner