|Full Name||Stewart Critchley|
|Relationship||Blane Whittaker (best friend)|
|First Episode||The Sinister Prime Minister|
|Last Episode||Asteroid Attack|
Blane Whittaker is his best friend and side-kick and he believes in UFOs and the supernatural. His favourite TV programme is Star Trek and he also runs the school radio club. Stewart knows nothing about Blane being a spy but Blane has been close to telling him a few times. However, Stewart gets suspicious when Blane keeps disappearing all the time.