Maddox was a student training at Sea Base 4 in 2084. He was fitted with cybernetic implants to permit his mind to enter the base computers.
When Maddox fainted, he was taken to see the enemy agent Solow and thence to the base's medical bay where she re-programmed his brain and made him sabotage the computers. In doing so, Karina discovered him and he was forced to kill her under the orders of Nilson, who worked for Solow.
He tried to shoot Nilson for making him murder Karina, but Nilson burnt out Maddox's brain, killing him. (TV: Warriors of the Deep)
