Sort of.
The myth of Spring-heeled jack comes from the early 1800's and may have been (loosely) based off of a real person. Its not hard to believe that a series of grusome crimes might be mis-remembered and mis-reported, and as the crimes take hold of the public imagination, the distortion gets more and more extreme.
This is one of the anthropological explinations for the early pagan gods: That they may have been real people at one point, but the stories got scrambled like a message in a game of 'telephone'.
Also, for a brief time period, Spring-Heeled Jack was the name given to 'Jack the Ripper' in the papers (although, there is now some serious doubt as to whether or not this was actually one person, or a couple, possibly even copy-cat murders).
no
The character "Jack Morrison" in the movie "Ladder 49" is a fictitious person.
No. He was a character created by Thomas Berger for the purpose of the book.
yes he does exist stupid
he is jesus
YES!
It doesnt exist.
Bald eagles are endangered, but they really exist.
No, Medusa does not really exist. She is a fictional character from mythology.
No, It does not exist!!
jack Bauer does not exist, keifer sutherland plays jack Bauer in 24
They are called Jack Russels, I believe, because Jack Russel was the man who let their breed exist!