The Centurions

Doc Terror creates a heavenly firestorm that threatens to destroy life on Earth.

Doc Terror strikes at the undersea city where the Centurions' Assault Weapons Systems are assembled.

An alien trapped in a frozen rock begins feeding off the energy within Skyvault.

The Centurions try to stop Doc Terror from exploiting a lost prehistoric world deep below the Earth's surface.

Jake and Alex's rivalry threatens the team's efforts to stop the theft of a geothermal power station.

Doc Terror and a bitter composer join forces to encourage whales to attack the new England-France bridge.

Doc Terror unleashes an enormous tornado on the world, and the Centurions must must seek assistance from Max's old flame, meteorologist Isobel Trask.

Doc Terror uses an earthquake to take over Denver, whose inhabitants he plans to use as a cyborg army.

Doc Terror joins master criminal the Executioner to capture the Skyvault computer and gain control of an asteroid full of a valuable mineral.

A shower of meteors heads towards the Earth. The Centurions are sent to try and stop them, however, one of them crashes into the desert. Doc Terror scans it and discovers an invulnerable plant growing on its surface. He gets Amber to place a seed from the plant onto Jake's dog, Shadow so that the Centurions' secret base is attacked by the plant. The plants quickly multiply and proceed to attack the rest of New York. The Centurions discover the existence of a master plant-borg that controls all the others, and try to destroy it. Science Lesson: Plants by Crystal.

A meteorite with alien life on its surface falls into the Arctic Ocean. Doc Terror wants it, and sends Mako to retrieve it. Sealab is also interested in the meteorite, and comes into conflict with Terror's forces. The Centurions are sent to diffuse the situation. However, problems later arise when the new Mark-1 A.I. Prototype onboard is infected by an alien virus carried by the meteorite. With every electronic system on board Sealab affected, the Centurions have to neutralise the virus before Doc Terror's approaching forces arrive. Science Lesson: Arctic Ocean by Max.

Ace is on the Moon, inspecting the security systems of a mass-driver ore transporter, that ships mined ore from the Moon to the Earth. It soon comes under attack by Terror's Strafers under the command of the cyborg Lunex. Ace is unsuccessful in defending the mining-camp, and both he and it are captured by Lunex. Doc Terror then announces that he will use the mass-driver to launch meteors at the Earth. Ace is rescued, and together, the Centurions beam-over to Lunar free it from Lunex. However, the meteor has already been launched toward the San Andreas fault line, and only Ace alone can stop it. Science Lesson: The Moon by Crystal.