Insurrection Prime, Kell's Scourge

Insurrection Prime, Kell's Scourge is the immensely powerful Prime Servitor of the Kell's Scourge, and the final boss of the Scourge of the Past Raid. It pilots a terrifying, enormous war machine that has successfully managed to breach the Last City. It seeks to bring down traditional Fallen ideals, and establish a new age of anarchy amongst their species through bringing down terror and hellfire through its mech. It is one of the most powerful Fallen combatants ever encountered by Guardians, only rivalling the likes of Aksis, Archon Prime in its combat capabilities.

Breaching the City
At some point, the Kell's Scourge stole technology from the Black Armory and kitbashed it along with their own technology, in order to create a massive war-mech for Insurrection Prime to commandeer.

Black Armory
Insurrection Prime and the Kell's Scourge breached various different Black Armory vaults and succeeded in stealing technology and weapons, helping outfit Kell's Scourge militants to have superior combat capabilities. At some point, the Kell's Scourge breached the Last City, somehow transporting Insurrection Prime's mech alongside them.

Traits
Insurrection Prime is an aggressive, terrifying Prime Servitor, reigning through its massive war machine. With the mech by its side, it is the most powerful Servitor ever encountered by Guardian forces, requiring a team of six to bring its mech down.

Trivia

 * The mech bears an incredible resemblance to Metal Gear Rex of the Metal Gear Solid series, suggesting possible inspiration taken in its design.
 * It is the first Servitor observed commandeering a vehicle or mech of any kind.
 * Insurrection Prime is the first Servitor to be a Raid boss in the Destiny series.
 * Parts from various different Fallen technologies can be seen throughout the mech, with its head plate being taken from a Spider Tank.
 * It pilots the first mech observed in the Destiny series.

List of appearances

 * Destiny 2
 * Black Armory