Billy Pilgrim, main character in Kurt Vonnegut's "Slaughterhouse-Five"
"BillyElliot," musical, film and main character
Billy Nutter, character on TV's "Jane by Design"
Billy, main character on animated series "Grim Adventures of Billy & Mandy"
BillyCranston, BlueRanger from the Power Rangers series
"BillyMadison," movie and main character
Billy Bickle, character in movie "Seven Psychopaths"
Dr BillyPeale, character on TV's "American Gothic"
Billy Bannister, main character of the Dragons in Our Midst series by BryanDavis Billy Thunderman, character in Nickelodian's "The Thundermans"
Billy Rosewood, character in movie "Beverly Hills Cop"
Billy Caufield, character in movie "The Dream Team"
BillyFlynn, character in the film "Chicago"
Billy, character in the film "Big"
BillyBlack, character in the Twilight saga
Billy, later Billystorm, character in ErinHunter's "Warriors" book series
Invisi Billy, son of the Invisible Man in "Monster High" show and series
William "Billy" McMahon, main character in film "The Internship"
Billy Acachalla, A character from the YouTube channel VenturianTale