Maleficent is a fictional character who appears as the main antagonist in Walt Disney Productions' 16th animated feature film, "Sleeping Beauty"(1959). She is represented as an evil fairy and the self-proclaimed "Mistress of All Evil" who, after not being invited to a christening, curses the infant Princess Aurora to "prick her finger on the spindle of a spinning wheel and die" before the sun sets on Aurora's sixteenth birthday.

Source: Wikipedia