Biggest Foes of Doctor Who, With Distorted Voices

This page is the CodyCross answer for the clue below from Top Secret, Group 2096, Puzzle 2 (Cryptographic Code).

Question is: Biggest Foes of Doctor Who, With Distorted Voices

and the answer is: DALEKS

Word Meaning:

DALEKS — plural of dalek

Definitions from Wiktionary.