A convicted criminal who was imprisoned on Planabos. He is an expert in mining. Yagon broke him out of the detention centre so that he could use his mining expertise to extract Barlumin. He was recaptured and sent to a Galactic Federation rehabilitation centre. He had a liking for Glando, which he sometimes drank to excess.

The Captain of the Thargon Thick Ship, searching for the runaway criminals Sula and Flyn. He does not like the Galactic Federation, and deliberately failed to inform the Galactic Federation when the ship entered Galactic Federation space.

Carol broke-out before the series started. She has all the normal telepathic abilities, but also knows when they are about to be in danger. She helped Stephen break-out. She leaves Earth to become an ambassador to the Galactic Federation.

The creature that chaired the Galactic Federation committee that discussed the Sorson and Thargon incursion into closed space around the Earth. 

The Chaircreature sent John to the Proctor Detention Centre when he objected to the lack of action taken by the committee. 

When the Tomorrow People and Morgan Evans threatened the Galactic Trig with a Sorson battle ship, the Chaircreature released John, but suspended the Tomorrow Peoples' membership of the Galactic Federation. 

Later the Chaircreature realised that the Galactic Federation was too bureaucratic and out of touch, and decided to shake up the Federation, to make it enforce laws and protect closed worlds. The Tomorrow People were also re-admitted to the Federation.

He is Ginge's younger brother. He has also become friends with the Tomorrow People. 

He is not a biker. He owns and drives a Jeep. He is not adverse to physical violence, often offering his services to the Tomorrow People when they can not use their telepathic abilities. He is learning judo. 

His full name is Christopher Harding.

He is in charge of the official Ministry of Defence Telepathic Research Project and has his headquarters at the Experimental Weapons Establishment. He orders the capture of various Tomorrow People, and the use of Synaptrol. 

He strongly believes that the Tomorrow People must be forced to work for the military, as other countries are working along similar lines. He would rather have a Tomorrow Person die rather than escape.

An unintelligent silver android. He belongs to Rabowski. He rebelled against Rabowski and started taking orders from Jedikiah. He was accidentally destroyed by Jedikiah during a fight with Peter.

He was an ancient Britain. His parents got into debt and sold him to the gladiator school run by Gaius in Silchester. When he was Gaius's favourite he learnt to build a steam engine. When he was freed by the Tomorrow People, he returned to the gladiator school and repaired the steam engine. This caused a Time Warp. Later he was knocked unconscious and lost his memory, correcting the Time Warp.

The Cyclops was stranded near Earth when his spaceship was damaged, and his telepathic crew was killed. He used his robot Jedikiah to capture the Tomorrow People so that they could pilot his ship to take him home. He was eventually sent home by jaunting him with with additional power from his spaceship. His race has visited the Earth several times, but they were always treated badly, this made him mistrust everyone and lead to him kidnapping them.