Dalek
From DALpedia
A mutant alien creature highly based on the alien of the same name from the British sci-fi TV show Doctor Who. A Dalek is a grotesque mutated organism integrated with a tank-like mechanical casing made of extremely strong polycarbonate. The resulting creatures are a powerful race bent on universal conquest and domination, utterly without pity, compassion or remorse. They speak in rasping staccato voices, and often exclaim the word "exterminate".
Wilham and Coriko agreed to try and defeat the Daleks which were beginning to take over the Kaled home world of Skaro. After Wilham and Coriko are done their quest it's highly likely they won't appear ever again in DAL.