Androvax

Androvax was a Veil, and an enemy of Sarah Jane Smith. He believed himself to be that last of his kind.

Biography
He was eventually caught by Captain Tybo, but during transport the ship crashed on Earth, allowing Androvax to escape. He knocked out Tybo and escaped, taking over the body of a young girl. However, when Sarah Jane Smith detected him he revealed himself, stunned Sarah Jane and entered her body instead. He then returned to her home in Sarah's body and instructed Mr Smith to self destruct, before proceeding to the Genetec Systems and instructing the microscopic nanoforms to build him a ship.

Androvax was finally caught when Luke threatened to sabotage the ship, and ultimately stopped the Nanoforms from destroying the planet. The Veil was then sentenced to execution. (SJA: Prisoner of the Judoon)

Androvax was sent to a swamp planet in the Calysteral cluster. There, he learned that he wasn't the last of the Veil, but instead there were 100 Veil in a hyperdimensional vault on Earth. He escaped the planet with an activator disk for the vault, but he was fatally poisoned by a Moxolon Swamp Viper. He attempted to get into the vault and was hunted by the Men in Black, but then learned that he needed a second disk. He enlisted Sarah Jane and her friends for help, not telling her that the process would annihilate the planet. Body jumping between the Bannerman Road gang and Gita, he opened the Vault and boarded the spaceship with the 100 last Veil and was transmatted out to space by Mister Dread preventing Earth's destruction, and took off in search of a new home. (SJA: The Vault of Secrets)

Abilities
Androvax's species were capable of "body-snatching"; literally jumping into another being's body and taking complete control of that individual, though some were able to resist to a certain degree. While in a host body, Androvax was able to stick out his own forked tongue, and was capable of locating and accessing memories that had been suppressed. (SJA: Prisoner of the Judoon/The Vault of Secrets) When he was stricken by the Moxolon Swamp Viper's venom, Androvax was able to briefly increase his stamina by leaping into a host body. (SJA: The Vault of Secrets) Androvax was also able of stunning his victims through a touch to the forehead. Androvax himself was quite cunning, evidently from his Two-By-Four approach to improvise with whatever he had access to, single-handedly destroying twelve planets and avoiding the Judoon for a undetermined period of time, taking advantage of the nanoforms and Mr Smith. (SJA: Prisoner of the Judoon)

Personality
Androvax acted outwardly cruel and malicious, deeming the purpose of the universe to be destruction and did what he could to create as much of it as possible. Underneath it all however, Androvax was lonely and depressed, it was heavily implied by Sarah Jane that he caused death and destruction to ease his own suffering. (SJA: Prisoner of the Judoon) When he learned that some of his species had survived, he became determined to save them and no less willing to destroy the Earth to do so. (SJA: The Vault of Secrets)