Easy, Jane from the novel/movie Spiderman.
No there is no Mario character that starts with a J
Jack Spratt is a fictional character whose first name has four letters beginning with J and whose last name has six letters ending in T. He is the main character of a nursery rhyme.
Frodo Baggins Frankenstein
Guinevere
Jasmine and Jafar are characters in Aladdin. They begin with J.
Yogi BearYodaYetiYoshiYandrothYankee ClipperYaoYarYo-YoYzma
johnny bravo.
J. K. Rowling, under the pseudonym Newt Scamander, a fictional character from the world of Harry Potter.
Count of Monte Cristo is a fictional character in the novel by Alexandre Dumas. It begins with the letter c.
There was no "vote". The fictional character "Harry Potter" was invented by the British author J. K. Rowling
He's a fictional character, so it probably starts with "555".
Captain Kangaroo would fit the bill I think.