Ginger-haired, blue-eyed Gordon is the aquanaut in charge of Thunderbird 4.

At twenty-two years of age, he is the great joker of the Tracy family and often has to be rebuked by his father.

Adventure is Gordon's life, and he revels in all water sports from skin-diving to water-skiing.

In the Submarine Service and World Aquanaut Security Patrol he became an expert on oceanography and developed unique underwater breathing apparatus which he later modified and improved for International Rescue.

During his term of service with the Wasps he commanded a deep-sea bathyscaphe and spent a whole year beneath the ocean investigating marine farming methods.

Gordon is one of the world's fastest freestyle swimmers and is a past Olympic champion at the butterfly stroke.

Shortly before International Rescue began operating Gordon was involved in a hydrofoil speedboat crash when his vessel capsized at 400 knots. The craft was completely shattered and Gordon spent four months in a hospital bed.

This accident served to bore down his exuberance and it also taught him respect for the sea... an essential ingredient for anyone who pits his wits against the elements.