Kmiro'sish-pattern Lich

The Deployment Platform T-56 Ground Support/Ultra Heavy, colloquially known as the Lich, is a Covenant matériel deployment vessel manufactured by Achoem Weapons. In keeping with the naming scheme of most Covenant vehicles, the Lich is named after a supernatural being.

Overview
The Covenant's largest airborne deployment platform, the Lich boasts heavy armament and is capable of mass deployments of up to forty soldiers. Because of this, UNSC encounters with Liches have almost always resulted in total destruction of the UNSC ground forces, resulting in a lack of available information on the craft. Like smaller Covenant dropships, the Lich is spaceworthy. It is also capable of traveling through slipspace, though presumably it cannot do so under its own power.

Similar to the Type-44 and Type-52 Phantom dropships, the Lich sports a gravity lift on its ventral surface. It likewise has two large bay doors on either side of the hull and Type-52 plasma cannons are stationed at each doorway. The Lich's main gun seems to be an ultra-heavy focus cannon like that of the Scarab. Part of the craft's power core is exposed on an aft pylon.

Deployment history
Though the Covenant used the Lich during the Human-Covenant War, it remained rarely seen. Moreover, the vehicle's great effectiveness often resulted in the annihilation of its human opponents. Thus, it remained poorly documented by the UNSC until the post-war period.

The reunified Covenant deployed multiple Liches during their initial foray on the Forerunner shield world Requiem in 2557. After the 's Marine and Spartan complement disabled an array of Forerunner particle cannons, they were attacked by a Lich. The Lich quickly disabled a Mammoth's Magnetic Accelerator Cannon and dropped off troops. Spartan John-117 and a team of SPARTAN-IVs boarded the craft and destroyed it by destroying its reactor, causing it to explode.

Later, when the Didact set course for Halo Installation 03, several Liches followed his vessel through slipspace. One of them was commandeered by SPARTAN-117 and his AI companion Cortana. Due to a rampant episode, Cortana allowed this Lich to crash into ONI's Ivanoff Station.

In 2558, a Lich was deployed when Fireteam Crimson activated a signal in Apex. Crimson boarded the Lich and stole its power core in order to power up the Harvester. This caused the Lich to become unstable, destroying it.

On March 5, 2558, Vata 'Gajat's mercenary group attacked attacked the peace conference between the UNSC, the Swords of Sanghelios, and Jiralhanae Chieftain Lydus' pack. During the battle one of the mercenaries' Liches was destroyed by Spartan Sarah Palmer when she threw her helmet full of grenades into the Lich's gravity lift. By May 2558, a band of Kig-Yar pirates had collected numerous Liches in a black market base on Ven III.

Trivia

 * The Lich occupies a remarkably similar gameplay niche to the Scarab in previous games. The Lich is likewise encountered in the campaign and Spartan Ops as a "boss" enemy that must be boarded and destroyed via firing into its power core. Its weaponry, internal layout, and size are also very reminiscent of the Scarab.
 * When the Lich is first encountered in the level "Reclaimer", Commander Lasky refers to it as an "unidentified Covenant vehicle" despite the craft being cataloged in 2556.

List of appearances

 * Halo 4
 * Spartan Ops
 * Halo: Escalation
 * Halo 2 Anniversary
 * Halo: Spartan Strike
 * Halo 5: Guardians