Andrew Craw is a thirteen year old headless ghost boy. For most of the story it seems that he is the main antagonist of the thirty-seventh Goosebumps book, The Headless Ghost. Though while his story drives the plot, he only appears at the very end.
The Headless Ghost
Andrew was a nasty brat who lived in a house haunted by a ghost, and liked to play mean pranks. One day, he found the hidding place of the ghost, who pulled off his head as a punishment. Ever since then, his ghost searched for his missing head until it was found by Stephanie Alpert and Duane Comack. There are many tales of gloomy disappearances in the house following his demise, but whether or not they really happened or were invented to increase the haunted house's appeal is not known. When a boy (or probably another ghost, it remains unclear) named Seth was pretending to be him as a prank, he threatened to take one of their heads.
Andrew (who is referred to as The Headless Ghost) appears as the main villain of the game, the object of the game is to defeat him by sending him flying.
The Headless Ghost doesn't make a physical appearance, he only appears in a portrait, it's a framed picture of a Headless Ghost, and you have to develop the photo of the head in the dark room, once you do that, place the picture above the headless portrait, and you'll earn another chess piece.