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Zelda attacks NASA's outpost on Mars and establishes her home, then mounts an attack on Earth, forcing the Terrahawks into battle

The Terrahawks struggle to defend against the aliens' strange powers, and find they may be forced to stop the attack at the cost of Ninestein's life.

Zelda defrosts one of her monsters, Sram, who unleashes his devastating voice against the Terrahawks.

Zelda unleashes MOID, Master of Infinite Disguise, who kidnaps Hiro and impersonates him.

The Terrahawks find a teddy bear-like alien adrift in a space capsule and take him back to Hawknest. However, he is actually one of Zelda's monsters and begins to wreak havoc in the base.

The Overlander is hijacked, but the hijacker, a news reporter by the name of Darrel, is a potential security hazard for the Terrahawks.

Yung-Star devises a way to make the Cubes more powerful by combining them. Zelda forms a group of them into a gun and threatens to destroy a newly constructed dam.

Zelda gives Sram another chance to defeat the Terrahawks by sending him to hijack the Overlander, an automated vehicle that delivers vital supplies to Hawknest.

An old space probe approaches Earth, but the Terrahawks worry because it was never meant to return.

The Terrahawks pick up a capsule in space containing only a strange vapour. However, it actually contains a gaseous monster that meddles with their minds.

Zelda attacks Earth on Christmas Eve, convinced that the Terrahawks' guard will be down. However, Ninestein anticipates such a move, and all-out war erupts. Perhaps the Christmas spirit can even reach someone like Zelda.

Ninestein enters an old-fashioned gun fight between one of Zelda's Cubes in the Arizona desert.

Zelda lures Ninestein with the captured two-man crew of a commercial space transporter. When the Terrahawks electronically isolate themselves from after rescuing the men, Kate has to inform Ninestein that the mission to get him back is ahead of schedule.

Zero and Dix-Huit roll to the rescue after Kate and Stu are kidnapped by Yung-Star and Yuri.

Kate is taken hostage by Andeburr Records employee Stuart "Stew" Dapples, who is under Zelda's control.

Kate Kestrel wins the world song contest and goes on to compete in the interstellar song contest. Zelda contends that as a resident of Earth's solar system she has a right to participate too, and challenges Kate to a sing-off on a neutral planetoid with her family and Sram as her band.

Zelda and the Terrahawks team up to stop Zyklon, a gigantic spaceship dedicated to destroying all life in the universe.

While pursuing a ZEAF, Hawkwing flies too high and is marooned in space.

Zelda dispatches Yung-star and a new monster, Lord Tempo, to find the location of Hawknest. While traveling back in time to avoid Spacehawk, they pick up King Richard.

When the Terrahawks are rendered catatonic by space flowers, Zero is forced to battle for the cure on his own.

Zelda enjoins the help of Cold Finger, an alien who uses water and ice as weapons.

Moid, Master of Infinite Disguise, transforms himself into the Invisible Man to create trouble for the Terrahawks

A pair of miners find and capture a Sporilla and take it back to Earth to sell to a shady sideshow owner. Once it is on Earth, Zelda uses her powers to enlarge the monster into an unstoppable giant.

Stew Dapples becomes the eyewitness to Zelda's latest plot when he sees a UFO.

Zelda deploys the alien Krell to Earth and plots the destruction of the space equivilant of Fort Knox

In this clip show, Zelda reflects on her previous attempts to kill the Terrahawks, and realises the time has come for new and more powerful monsters to be brought to the fold, whilst Cy-star has some important news

The aliens are preoccupied with the birth of Cy-star's child while the Terrahawks prepare to launch a sneak attack.

An overzealous general seizes control of the Terrahawks to mount a direct assault on Zelda's Mars base. Ninestein makes futile attempts to warn him that Zelda and her gang of monsters are too powerful to engage in direct combat. Zelda readies a counter-strike team of Sram, Yuri, Lord Tempo and Yung-star.

Yuri seals Battlehawk inside Hawknest after Battletank picks up a bomb while investigating a ZEAF.

Zelda sends a huge egg to the moon that hatches into a one-eyed monster.

A statue of Yung-star is found at a museum on Earth.

It-star masterminds its first attack, attempting to destroy the Terrahawks with a bomb.

Yung-star and It-star are sent with Captain Goat to run a pirate radio ship to lure the Terrahawks into a trap.

Yung-Star runs away, but he is unknowingly carrying a 'bug' in the form of a powder inside him.

Tamura, a Samurai warrior from outer space, forces Zelda and Ninestein to meet on neutral ground in order to settle their dispute peacefully.

Lord Tempo creates a time warp in order to slow down the Terrahawks' ability to react to a full-scale attack.

Zero is feeling out of sorts and goes in for repairs, but makes a grim discovery; Zelda and her family have infiltrated Hawknest.

Zelda lures the Terrahawks to Jupiter's moon Callisto by ransacking a listening post there. Once they arrive, they find themselves being stalked by the fearsome Sporilla.

The Zeroids find an explosive meteorite, which the human Terrahawks mistake for gold and which Zero mistakes for the god that Ninestein worships; it kills one of Ninestein's clones when it explodes, forcing another to take his place.