Jack Sparrow is based on a character.
== Concept and creation ===== Characters ===When writing the screenplay for The Curse of the Black Pearl, Ted Elliott and Terry Rossio envisioned Captain Jack Sparrow as a supporting character in the vein of Bugs Bunny and Groucho Marx
 This is mainly shown by his increasingly erratic behaviour and Jack's hallucinations, which appeared to be simply his deranged mind in the beginning where dozens of "Jack Sparrows" appeared to crew the ship in his solitary exile, but later the hallucinations grew more important and there were mainly two "Jacks" constantly arguing about which path to follow: the immortality or the mortality

