They are daemons, not devils.

1 a : an evil spirit b : a source or agent of evil, harm, distress, or ruin
2 usually daemon : an attendant power or spirit : GENIUS
3 usually daemon : a supernatural being of Greek mythology intermediate
  between gods and men
4 : one that has exceptional enthusiasm, drive, or effectiveness
  <a demon for work>

	ross.harvey@computer.org