Dalek Hive

According to one account, the mobile Dalek Hive was the heart of the sole remaining population of Daleks at one point in the Eighth Doctor's lifetime. A smaller Dalek Fleet swarmed around the Hive.

Nature
Physically, the Dalek Hive appeared as a huge space crusier. Its hull was made up of 3 billion tonnes of solid dalekanium. Its propulsion units generated a force equivalent of 600 erupting volcanoes.

The Dalek Hive's leader was a giant Supreme Dalek, who resided in the Hub at the centre of the Dalek Hive. Other areas of note included the Crest, a clear half-bubble on top of the shop from which the Supreme Dalek could watch outer space through his own eye.

The Hive was home to other specialist Daleks than the custom Supreme, including Dalek Surgeons and Phalanx 49, which was made up of Special Weapons Daleks. (COMIC: Fire and Brimstone)

History
According to one account, the Dalek Hive were the last remaining population of Daleks (COMIC: Fire and Brimstone) following the destruction of Skaro and most of the Imperial and Renegade factions by the Seventh Doctor. (TV: Remembrance of the Daleks) Other accounts suggested the Daleks survived as a Skaro-based empire still led by the original Dalek Emperor, (PROSE: War of the Daleks) or in the form of the Restoration Empire. (PROSE: The Restoration Empire, etc.)

While sailing past the Magellan Cluster, the Dalek Hive was attacked by a ship which had fallen through a rift from another universe. After wiping out all of its aggressive inhabitants save one, the Daleks were horrified to discover the insectoid mutants were the Daleks of this other universe. Becoming paranoid about being invaded en masse by "unalike" Daleks from parallel realities, they threw their all into the idea of a preemptive strike against the rest of the Omniverse.

To do so, they had their android Marquez interfere with humanity in the 51st century, who were creating an engineered sun called Crivello's Cauldron similar to the Eye of Harmony. He ensured that the Eighth Doctor got involved, thereby making sure that the biodata of an individual time sensitive would become bonded to the Cauldron. When the Doctor and Izzy visited the Cauldron at a later date, the Daleks took control of Icarus Falling — one of the artificial worlds now orbiting the Cauldron — and used the Doctor as a conduct to take control of the Cauldron and make it collapse into a black hole which could then be turned into an interdimensional gateway.

They had failed to realise that various forces from other universes were waiting for just such an opportunity to swarm in — including the spider-like Daleks as well as the Great Vampires. The Dalek Hive and its fleet were attacked as they began to cross through the wormhole, quickly proving no match for their enemies, with the Dalek Supreme being destroyed by the alternative Daleks. Ultimately, the Doctor got Ptolemy Muttonchops, an avatar of the Cauldron, to take conscious control of the Cauldron's power and cause it to go supernova, destroying the Daleks entirely. He discovered that Rassilon had orchestrated this entire sequence of events, paying the Threshold an unknown prize for them to embed an operative on Icarus Falling and ensure that those events would come to pass, wiping out the Daleks once and for all. (COMIC: Fire and Brimstone)