Halvinor

The Halvinor was one of many warrior tribes of the Sycorax.

This tribe was the one to initiate the Sycorax invasion of Earth on Christmas 2006, before they were defeated by the Tenth Doctor and destroyed by Torchwood.

History
"Many centuries" prior to the 21st century, the Halvinor tribe (PROSE: ) united with the rest of the Sycorax tribes when a spaceship that crashed on their home planet gave them the "secrets of interstellar craft". The Sycorax split their home planet into the armada of asteroids which contained Fire Trap, (PROSE: ) although one account indicated that the asteroid was hit independently by the spaceship. (PROSE: ) The tribe fitted the spaceship's All Speed Inter-System Type K engine to the asteroid and created their Great Hall. (PROSE: ) According to one version of the source, the SYcorax originated on Fire Trap. (PROSE: )

Sycorax invasion of Earth
In 2006, (TV: The Christmas Invasion) around the time of Christmas, (WC: ) a Sycorax asteroid ship entered the Sol system, (TV: The Christmas Invasion) after the Sycorax learned of Earth and its true value in precious stones, metals, minerals, and slaves. (PROSE: The Final Darkness) When the space probe Guinevere One crashed into them, they used the blood sample for blood control, threatening to kill every human with A+ blood unless they were given half the population as slaves. The Tenth Doctor, who had just regenerated, and his allies Mickey and Rose were inside his TARDIS. The Sycorax picked up a signal from the TARDIS's advanced technology and teleported them to their ship. The Doctor activated the blood control, knowing human survival instincts would break its hold. The Doctor challenged and defeated their leader in a sword duel, forcing the Sycorax to leave Earth and humanity alone.

However, as the Sycorax ship was leaving Earth, Harriet Jones ordered Torchwood to fire at it with a salvaged alien ray weapon, from a Jathaa sunglider, destroying it. (TV: The Christmas Invasion) UNIT then issued a press briefing to humanity where they confirmed the existence of aliens. (PROSE: Alien Life)

Aftermath of the 2006 invasion
The wives of the Sycorax who invaded Earth came to the Sol system to find them, but found only the dust remains. They disguised their ship as an island called Shadow Cay, hypnotising all of humanity into believing it was discovered by Columbus. The Sycorax spent years searching for the ship's black box, the Foraxi Yox, and killed many humans, reanimating and controlling them as zombies, or human abstracts, to find it. In 2009, after discovering from the Foraxi Yox recording that humanity had betrayed the Sycorax, this group of Sycorax had a 747 aeroplane boarded with phage abstracts Gilfane Craw had created take off, intending to spread a virus carried by the abstracts that would stop death but leave humans in agony for centuries.

Donna Noble and Norah stowed away on the plane, and flew it back to Shadow Cay before it could reach London and spread the virus throughout humanity. Meanwhile, the Tenth Doctor overloaded the ship's magma-sculptor by making it attempt to copy the whole of Earth, and set its controls to take off before it exploded. (COMIC: The Widow's Curse)