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Spiridons, also known as Zalerians, were the invisible humanoid natives of Spiridon.
Biology[[edit] | [edit source]]
Anti-reflecting light waves made the Spiridons naturally invisible at all times to all but the eye-plants. This ability made them the target of the Daleks, although the high energy demands and the risk of light wave sickness made this invisibility difficult to achieve in other species. After death, a Spiridon would become completely visible. (TV: Planet of the Daleks) The Thal scientist Codal believed that their invisibility was a trait evolved as the ultimate survival strategy on a planet where all other life was unrelentingly hostile. (PROSE: Doctor Who and the Planet of the Daleks) It was possible for them to make themselves visible by undergoing many painful treatments including the regular ingestion of certain chemicals and nutrients which added pigmentation and caused cellular decay. A Spiridon's genetics, however, would constantly attempt to correct these changes. (AUDIO: Return of the Daleks)
History[[edit] | [edit source]]
The Spiridons had a civilisation, which fell into ruin by the 26th century, when the Daleks saturated the forests with deadly rays (PROSE: Doctor Who and the Planet of the Daleks) and released bacteria which killed off most of the population. The survivors cooperated with the Daleks and were viewed as little more than slaves. A few, like Wester, did what little they could to fight back. With the planet conquered, the Daleks hoped to discover the secret of the Spiridons' invisibility and reproduce it for their own use on an army kept in suspended animation. During the occupation, the Spiridons wore thick purple fur coats that covered most of their bodies to protect themselves from the cold. Whilst the Daleks were developing a deadly bacteria, the Spiridons were to be inoculated against it. Wester, the Third Doctor, Jo Grant, and a small group of Thals sabotaged the Dalek operation. The Dalek Supreme only considered this a delay and promised that the Daleks would return. (TV: Planet of the Daleks)
Davros spent a year on Spiridon, successfully reviving the frozen Daleks and building them into an army of four million. During the fighting between the two factions of Daleks, the Spiridons aided the Seventh Doctor in releasing his allies from their mind control. (COMIC: Emperor of the Daleks!)
Fearing that their invisibility made them a target, the Spiridons undertook many painful treatments to remove this trait. The Spiridons renamed themselves Zalerians and their planet, Zaleria, hoping it would disguise them from the rest of the universe. In future generations, a council of elders were the only ones on Spiridon to remember the dormant Dalek army on their planet. Their religious texts recorded their ancestors' complicity but most only knew the Daleks had invaded.
Centuries later, an army of Daleks from the Seriphia Galaxy began the second occupation of Zaleria. Although the Zalerians fully cooperated with the Daleks, the Daleks began to handle the natives with more aggressive methods backed by Ogron troops. It soon became apparent that the Daleks realised they could revive the army and continue their invisibility experiments. Daleks experimented on the Zalerians by placing them in light-wave chambers, hoping to reverse their visibility and reverse-engineer the secret. Although Kalendorf and Susan Mendes attempted to stop them, the Seventh Doctor agreed to help the Daleks unlock the secret to invisibility in exchange for Kalendorf's life. Years later, the Zalerians' invisibility was restored when the Doctor released a contagion. The same contagion gave the Daleks a fatal light-wave sickness which the Spiridons thought also killed the Doctor. (AUDIO: Return of the Daleks)
At the time Sam Jones was on Hyspero, Spiridons in purple furs were present in Hyspero, its capital city. The Aja'ib apparently referred to the Spiridons during one of their periods of Dalek enslavement. (PROSE: The Scarlet Empress)
Behind the scenes[[edit] | [edit source]]
In the novelisation of Planet of the Daleks, Vaber explicitly says that the Spiridons' civilisation is in ruins but no one says when this occurred. The crumbling ruins, which the forest has largely overtaken, appear to be thousands of years old but it is not unreasonable to believe, as Jo Grant supposed, that there was something built more recently.