s - machines made in the form of human beings - are not common in the works of Diana Wynne Jones, being a story device more suited to science fiction than fantasy.
(Howl's Moving Castle
contains examples of artificial humanoids created as servants by the Witch of the Waste
and the wizard Suliman
, but to call any of them androids would probably be stretching things too far.)
Androids who have played significant roles in DWJ stories include:
Please add any others if you know of them. Were Venturus' robotic ship-builders androids?