TARDIS Index File

Brain parasite

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"Brain parasite" is a title based upon conjecture.

Check the behind the scenes section, the revision history and discussion page for additional comments on this article's title.

Brain Parasite
Biological type: Worm-like parasite
Affiliated with: The Trickster's Brigade
Appearance: Immortal Sins
You may be looking for mind parasite.

Brain Parasites were a type of parasitic, worm-like creature.

Biology Edit

Adult Brain parasites were around a metre long with four hooked mandibles around the mouth. They would implant their larvae using these hooked mandibles, whence they would travel to the brain and eventually cause insanity. Brain parasites were slowed by low temperatures and tasted like oysters. (TV: Immortal Sins)

History Edit

Brain parasites were known on at least 151 worlds, where they were almost universally disapproved of. On one of these worlds they were instead considered a delicacy. Jack Harkness had encountered them on several occasions, including once when he was forced to eat one to be polite.

In 1927, the Trickster's Brigade obtained a brain parasite and brought it to America, planning to infect future American President Franklin Delano Roosevelt and drive him insane, causing him to eventually drop out of World War II and change the timeline. Torchwood learned of this and sent Jack to prevent history from being changed. Jack and his new companion Angelo Colasanto found it in a crate that was to be sent to bite the president. When the brain parasite lashed out at Angelo, Jack was forced to shoot it in the head, killing it instantly. (TV: Immortal Sins)

Behind the scenes Edit

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