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Fan Casting Jason Isaacs as Jonathan Christopher "Sebastian" Morgenstern in The Mortal Instruments (1988)

prithvirajbasu made this fan casting suggestion on June 2, 2025. What do you think? See below to cast your vote, or click here to see all fan casting suggestions for this role.

Jason Isaacs as Jonathan Christopher Sebastian Morgenstern in The Mortal Instruments (1988)

Jason IsaacsUnited Kingdom

62 years old
Jason Isaacs (born 6 June 1963) is an British actor. He is best known for his portrayal of Colonel William Tavington in The Patriot (2000), Michael D. Steele in Black Hawk Down (2001), Lucius Malfo...
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Jonathan Christopher Sebastian Morgenstern in The Mortal Instruments (1988) add character image
Fan Casting

Jason Isaacs

as

Jonathan Christopher "Sebastian" Morgenstern (Sebastian Morgenstern)

in

The Mortal Instruments (1988)

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The Mortal Instruments (1988)

The Mortal Instruments (1988)

If the Mortal Instruments was made into a movie series starting from 1988, properly accurate with the books (as in more so than both the Tv show version and the movie version). Plus 1988 is when ...
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Fan casting suggestion made by:

prithvirajbasu

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Jason Isaacs is known for his roles in Harry Potter and the Goblet of Fire, Harry Potter and the Deathly Hallows: Part 2, and Harry Potter and the Chamber of Secrets. He has been suggested by fans for 11,031 roles on myCast, including Erik Lehnsherr in Marvel Cinematic Universe. Similar actors include Ralph Fiennes, Viggo Mortensen, and Michael Fassbender. Jason Isaacs was suggested to play Jonathan Christopher "Sebastian" Morgenstern in The Mortal Instruments (1988) by prithvirajbasu. Other actors sugggested to play this role include Laurie Kynaston, Gerard Butler, and Rami Malek. The Mortal Instruments (1988) has 25 roles, including Hodge Starkweather, Valentine Morgenstern, and Lilith.

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