Scaroth

 Name: Scaroth, last of the Jaggaroth, AKA Captain Tancredi, AKA Count Scarloni; potentially ten other unknown aliases.

 Format: Television Show

 Time of Origin: Complicated; he technically lived over four million years ago and originated from the Jagaroth homeworld, but was fractured in time into twelve different time periods between the moment of the explosion and 1978 on Earth.

 Appearances: "City of Death"

 Doctors: Fourth Doctor

 Companions: 2nd Romana

 History: The last of the Jaggaroth, a vicious, war-like race that lived long ago in some of the early days of the universe - according to The Doctor, no other race would miss them -, Scaroth was most distinctive for the unique nature of his plan and the sheer scale of the lengths that he went to in order to accomplish his goals.

Count Scarlioni

 Due to unspecified circumstances, the last Jaggaroth ship in existence - what happened to the others is unknown, but given their brutal nature it seems likely that the rest of their race were destroyed in conflict - crash-landed on Earth, with Scaroth, the pilot, forced to attempt a take-off using warp drive when the ship’s conventional engines were damaged in the initial landing. As a result, the ship exploded - the radiation released simultaneously serving as the catalyst to trigger the evolution of the primordial soup that was the only life on Earth at this time -, fracturing Scaroth into twelve different aspects of himself in twelve different periods in Earth’s future history.

Scaroth in his True Form

 With each Scaroth possessing an undefined connection to the others due to their incomplete nature - although the evidence suggests that their personalities were all the same -, they set about creating an elaborate plan to save their race. Using a specially designed face-mask to create the illusion that they were human, the Scaroths set about manipulating the human race - one claimed that they were responsible for the creation of the pyramids, astronomy, the wheel, and the secret of fire, but given his sheer ego he may have been exaggerating - with the goal of improving their technological evolution to the point that the Scaroth known as Count Scarlioni, the Scaroth who had arrived at the latest point in history, would be able to develop a time machine so that he could travel back in time and stop himself from throwing the switch.

The precise details of Scaroth's influence on humanity's evolution are unknown aside from Scarlioni's boasts, although it is known that a Scaroth existed in Egyptian times where he appeared among hieroglyphs representing the Egyptian gods - the Fifth Doctor later speculated that the Osirans ("Pyramids of Mars") used Scaroth as a foreman to create the pyramids they needed to contain their prisoners on Earth ("The Sands of Time") - while another Scaroth, under the alias of Captain Tancredi, arranged for Leonardo da Vinci to paint six identical copies of the Mona Lisa and hide them in a secret location where Scarlioni could recover them in the future (Something that it was implied other Scaroths had done with other historical artefacts). Having acquired the paintings, Scarlioni would then steal the original and sell the seven copies to seven prospective buyers, with the intention of using the money to fund his time-travel experiments (It was never specified whether Scaroth's actions in the past ever changed the lives of his other, future selves, or if he simply made the decision to do something because of details that his other selves had discovered in future).

The Jagaroth Ship

 Despite his efforts and the aid of the brilliant Doctor Kerensky, Scarlioni’s planned time-travel excursion would have failed were it not for the unexpected addition of the Fourth Doctor and Romana to the equation, the two of them visiting Paris just as Scarlioni was preparing to steal the Mona Lisa. Allying themselves with Duggan, a private detective hired by a group of art collectors to investigate the various ‘fake’ art treasures that Scarlioni was selling, The Doctor and Romana attempted to track the source of unusual time distortions that they had observed during their time in Paris, discovering Scarlioni’s time-travel equipment in his basement. Attempting to track the reason for Scarlioni’s interest in the Mona Lisa, The Doctor travelled back to visit da Vinci, only to encounter Captain Tancredi, who revealed the truth about Scaroth to The Doctor before he managed to escape.

 However, while The Doctor was visiting da Vinci, Romana was forced into helping Scarlioni complete his machine when he threatened to destroy Paris if she didn’t assist him. Although Scarlioni was able to travel back in time to the original explosion, Romana had included a deliberate fault in the equipment that would only allow him to remain in the past for two minutes, but The Doctor quickly realised that this was still enough time for the now-unmasked Scaroth to change his past. Racing against time, The Doctor, Romana and Duggan retreated to the TARDIS to follow Scaroth back to the past. Although Scaroth arrogantly rejected The Doctor’s efforts to reason with him, dismissing the human race as nothing but a tool that he had used to save his own race, he was finally stopped when Duggan punched him, knocking him out for the last remaining seconds of his time in the past before he could warn his past self. Returned to the present, Scaroth was killed when his henchman failed to recognise him without his usual mask, the subsequent damage to the time equipment destroying Scaroth and the mansion, ending the Jagaroth once and for all. What became of the other Scaroths is unknown, although given their strange connection to each other it doesn’t seem unreasonable to assume that the others died at the same time as the Scarlioni version did.