not all dreams are sweet

Frederick Charles "Freddy" Krueger is a fictional character from the A Nightmare on Elm Street series of films. Created by Wes Craven and portrayed by actor Robert Englund in every film of the series, he is an undead serial killer who can attack his victims from within their own dreams. Freddy is commonly identified by his burnt, disfigured face, red and green striped sweater, brown fedora hat, and trademark metal-clawed leather glove, which he fashioned himself. His full name has been listed as Frederick Charles Krueger. Wizard Magazine rated him the 14th greatest villain of all time, and he came in 8th on British television channel Sky Two's Greatest Villains of All Time.
Wes Craven claims his inspiration for the basis of Krueger's power stemmed from several stories in the LA Times about a series of mysterious deaths: all the victims had reported recurring nightmares beforehand, and died in their sleep. Physically, Craven's inspirations for Freddy included a homeless man who had frightened Craven as a youth and a bully at his school. The 1970s pop song "Dream Weaver" by Gary Wright sealed the story for Craven, giving him not only an artistic setting to "jump off" from, but the synthesizer riff from the Elm Street soundtrack.
Robert Englund has expressed many times that he feels that the deeper meaning behind the character is that he represents neglect, particularly the neglect that children and teens are sometimes subject to when growing up.