Gerry Anderson Encyclopedia
Doctor Ninestein
Dr. Ninestein.jpg
Born 20th Dec 1973, United States
Hair Black
Eyes Blue
Series Terrahawks
Role Commander
Voice Actor Jeremy Hitchin
"Flaming Thunderbolts!"
— Doctor Ninestein's familiar catchphrase

Doctor 'Tiger' Ninestein is the commander in chief of the Terrahawks and one of the main characters of the series.


Ninestein is an artificial human, having been grown from the genetic material of Austria born scientist Dr. Gerhard Stein. It is unknown if he is an exact duplicate or if he is a unique entity. His first name is unknown. He has 8 other exact duplicates known as clones. The 'nine' in his name refers to himself being the 9th of these clones. Whether these share Ninestein's name or have individual names is unknown. These clones have been sent to various different parts of the world to learn and mature in their own ways. Ninestein in particular went down a military career path and eventually became the founder and leader of the Earth Defence Squadron known as Terrahawks.


Ninestein is a tough and stern leader, always demanding the very best of those under his command sometimes to the point of absurdity. He takes his job as leader of Terrahawks very seriously, but he has a bit of a cold blooded streak as he tends to assume the worst of every alien encounter, preferring to destroy at any given chance. He has a particular disliking of the Zeroids and their capacity for independent thought, especially Zero given his tendency to disobey orders and act without authorization from Ninestein. Despite his cold exterior, Ninestein does care a great deal about his teammates and on more than one occasion has spoken about the strength of humanity in the face of Zelda and her monsters.

The Invaders from Mars

Ninestein was the first human being to see Zelda first hand when he was abducted by her spacecraft. He quickly deduced her artificial nature and her looks being based on the eldest of their creators. He also deduced that Zelda's power over matter had been drained by the fighting so she didn't have the strength to maintain her ship's forcefield. With this knowledge, he ordered Lieutenant Hiro to open fire and destroy the ship with him on it. Because Zelda's power was also the method by which he had been taken however, when the ship was destroyed he was returned to Earth without harm. Both Ninestein and Zelda each recognize the intellectual prowess of the other. Throughout the series, these two have tried to outwit each other through many different schemes and plans. Zelda was successful in fooling Ninestein with a bomb disguised as a lump of gold, killing him and forcing one of his clones to take his place. Ninestein in turn was successful in tricking Zelda by giving himself up to her in exchange for two hostages, only for the rest of the Terrahawks team to successfully break him out of her base in accordance with his plan. However, because of their near equal intellect, whenever one side makes headway in their conflict, something invariably goes awry or the other manages to thwart their plans.


  • Jeremy Hitchins based his voice for Doctor Ninestein upon that of the famous american actor Jack Nicholson.
  • Ninestein's clones are all named individually as Onestein, Twostein, Threestein, Fourstein, Fivestein, Sixstein, Sevenstein and Eightstein. If anything happened to him, he would be replaced with one of them.
    • Although unnamed in the episode itself it can be deduced that Onestein is killed and mailed to the Terrahawks during the events of A Clone of My Own.
    • Twostein makes his debut in the audio episode No Laughing Matter working as a travelling stand-up comedian. He battles Zelda's newest creation Cy-Splitter in a battle of wits and poor jokes in order to make the other laugh themselves to death. He later returns in the audio episode The Wrong Clone Number.
    • Threestein makes his debut in the audio episode You Foe, he is a good natured individual but falls prey to Zelda's manipulation leaving the Terrahawks in a crisis...
    • Fourstein is killed after leaving a bar late at night by It-Star when he ambushes him on the side of the road during the events of A Clone of My Own.
    • Fivestein is killed protecting his cat from Zelda when she breaks into his home during the events of A Clone of My Own.
    • Sixstein makes his debut in the audio episode Set Sail for Mis-Adventure where he is drafted into providing escort for Professor Otto Maddox's new weapon.
    • Sevenstein is rescued by the Terrahawks after surviving a plane crash while fleeing to Alaska. Due to Zelda targeting the Ninestein clones, he becomes bitter towards his own existence and berates Ninestein over it. He is taken back to Hawknest in order for his mind to be wiped and body to be stored for use by Ninestein later.
    • As revealed by Sevenstein, Eightstein was the clone who had his mind wiped during the events of Gold.
  • There were 3 different Ninestein puppets constructed throughout the Terrahawks series. The first saw use throughout season 1 until the episode 'The Sporilla' after which it was replaced. The second would go on to be used throughout the rest of season 1, season 2 and part of season 3. The third was most likely made for shooting multiple scenes featuring the character at the same time during season 3, but would ultimately end up replacing the second puppet for the rest of the series.


Terrahawks Poster.jpg

Terrahawks: Doctor Ninestein | Mary Falconer | Kate Kestrel | Hawkeye | Hiro | Zeroids | Sergeant-Major Zero | Space Sergeant 101 | HUDSON
Androids: Zelda | Yung-Star | Cy-Star | It-Star
Others: MOID | Sheriff Cy Bull | Sram

TV Series Episodes:
Season 1:
Expect The Unexpected Part 1 | Expect The Unexpected Part 2 | Thunder Roar | Happy Madeday | The Ugliest Monster of All | Close Call | The Gun | Gunfight At Oaky's Corral | Thunder Path | From Here To Infinity | Mind Monster | A Christmas Miracle | To Catch A Tiger
Season 2:
Operation S.A.S. | Ten Top Pop | Play It Again, Sram | The Ultimate Menace | Midnight Blue | My Kingdom For A Zeaf | Zero's Finest Hour | Cold Finger | Unseen Menace | Space Giant | Cry UFO | The Midas Touch | Ma's Monsters
Season 3:
Two For The Price Of One | First Strike | Terratomb | Space Cyclops | Doppelganger | Child's Play | Jolly Roger One | Space Samurai | Runaway | Timewarp | Operation Zero | The Sporilla | Gold

Original Television Soundtrack

Terrahawks Audio Series Episodes:
The Price is Right | Deadly Departed | A Clone of My Own | Clubbed to Death | Timesplit | No Laughing Matter | 101 Seed | Into the Breach | Sale of the Galaxy | The Trouble with Toy Boys | Return to Sender | Renta-Hawks | Chain of Command | Lights, Camera, Disaster | Count Anaconda's Magnificent Orbiting Circus | My Enemy's Enemy | No Second Chances | The Wrong Clone Number | Set Sail for Mis-Adventure | You Foe | Living Legend | The Prisoner of Zelda | Star Crossed | Enemies, Negotiation and Deceit


Terrahawk | Battlehawk | Hawkwing | Spacehawk