Aidan Williams is a character from Extraction. He is the son of Robert Williams, a warden of Dunsley Fields. When he and his father become trapped in the cabin of a Sonic Ejection Platform, Aidan treats his father for shock and calls for help by turning his model of Thunderbird 3 into portable radio. Aidan gets into contact with Gordon in Thunderbird 4 and is asked to ping the craft so Gordon can locate them to rescue.

After Aidan and his father are safe, Brains calls Thunderbird 2 and asks if Aidan and his father would like to come back to Tracy Island for a tour of his lab.

Aidan was voiced by William Wright-Neblett.