Fiend was among the insults which the Sixth Doctor applied to Astrolabus. (COMIC: Once Upon a Time-Lord)
The Fourth Doctor described the Decayed Master as a "fiend who glories in chaos and destruction". (TV: The Deadly Assassin)
Milo Clancey described Maurice Caven as a fiend. (TV: The Space Pirates)
N-Forms that appeared on Earth were believed by humans to be fiends. (AUDIO: The Ghosts of N-Space)
GalSec colonist Krans branded the Sontaran Commander Styre as a "murdering fiend". (TV: The Sontaran Experiment)
H. G. Wells initially believed the Sixth Doctor to be a "foul fanged fiend". The Doctor assured him that he was "not that long in the tooth" and that neat blood brought him out in a rash. (TV: Timelash)