"The Mortal Instruments: City of Bones" recently hit cinemas nationwide earning a whopping box office debut of $3 million. The film based on Cassandra Clare's novels has garnered even more attention from book lovers across the world. With Jamie Campbell Bower playing Jace Wayland, fans are desperate to know who would play Jace's complete angelic opposite, Jonathan Christopher Morgenstern. Here are a few suitable choices.

For those who have yet to read the books in "The Mortal Instruments" series, warning spoilers ahead. Fans simply love Jamie Campbell Bower as Jace Wayland, Valentine's fake son whose blood has been taken from an angel. Of course, a few other fans are excited to see who would play opposite Jamie as his "brother," Jonathan Christopher Morgenstern.

Jonathan Christopher Morgenstern is Valentine Morgenstern and Jocelyn Fray's biological son. Unlike Jace, Jonathan is the real older brother of Clary Fray who was believed to be dead in the first book, "City of Bones." Jonathan doesn't make his appearance until book three, "City of Glass" where he takes the name Sebastian Verlac in order to become close to his sister, Clary.

Experimented from demons blood, Jonathan is anything like Jace who is naturally loving and sweet. Jonathan Morgenstern is the complete opposite, a pure psychopath that resulted from Valentine's rigorous training and the demon blood experiment.

Given those characteristics, only a few Hollywood hunks can take on the role of the cold-hearted and sadistic Jonathan. From Alex Pettyfer to Evan Peters, check out the slideshow to see all the potential actors fit for the part of Jonathan Morgenstern.

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