Captain Grey

Brad Holden, codenamed Captain Grey, was a member of Spectrum, (PROSE: Letters Special) Earth's primary defence against the Mysterons during the Mysteron War. (COMIC: Traitor Black Gives In!, PROSE: They Watch the World et al.) Holden previously served in the World Aquanaut Security Patrol and was the first commander of Stingray. (PROSE: Letters Special) Various accounts dated these events to either the 2060s (COMIC: SPECTRUM et al.) or the 2080s. (PROSE: 'Jinx Ship' Blasts Off For Mars et al.)

Biography
At some point, Holden joined the World Aquanaut Security Patrol. He was the first captain of Stingray and served alongside his navigator Bill Portreeve for five years. According to one account, Portreeve transferred to WASP in 2078, commencing duty soon after. (PROSE: Letters Special) Holden was eventually replaced as the captain of Stingray by Troy Tempest. (COMIC: Curse of the Crustavons et al.)

Holden later joined Spectrum, becoming Captain Grey. (PROSE: Letters Special) In 2069, Grey and Captain Blue were in charge of security operations for the opening of London's rebuilt Car-Vu. They had thrown "a massive security screen" across the city, with Colonel White assuring reporters that there would be "no repeat of history". (PROSE: Thunderbirds Film for Sale!)