Overlord tank (Generals 1)

"ARE YOU READY?!"
 * Overlord

Key to the Chinese arsenal, the mighty Overlord was by far the largest and most powerful tank fielded by any of the factions in the GLA conflict and could quite easily defeat any conventional vehicle in a one on one fight. Travelling on four sets of treads, the Overlord by default mounted two enormous cannons (located on the sides of its turret) and was heavily armoured. Its slow speed left it potentially vulnerable to larger squads of tanks or anti-tank infantry, and in particular aircraft, which it had no protection from by default. The Overlord's weaknesses could be compensated (to a degree) with upgrades, as detailed below. The Overlord was sufficiently large enough to crush other vehicles.

Chinese General Ta Hun Kwai, known as the 'Tank General', developed his own, even more dangerous model of the Overlords, known as the Emperor Overlord Tank.

Upgrades

 * Propaganda Tower - Repaired its host vehicle and other friendly units in the vicinity, and provided a small boost in firing rate. It could be made more effective itself with the Subliminal Messaging upgrade, available from the Propaganda Center.
 * Gatling Cannon - Provided powerful anti-infantry and anti-aircraft protection, and gave a boost in firepower against other targets. Upgraded with the Chaingun upgrade from the War Factory.
 * Bunker - Up to five infantry units could occupy the Bunker and fire from within it.

In addition, the Nuclear Tanks and Uranium Shells upgrades, available from the Nuclear Missile Silo, provided Overlords with improved speed and firepower respectively. The tanks of General Tsing Shi Tao (also known as the 'Nuclear General') had these upgrades by default at no extra cost.

Tactics/Counters
The slow-moving, overwhelmingly armed Overlord epitomised the basic approach of the Chinese army. In order to be most effective these tanks were used in mixed squads, with varied upgrades and flank protection from other units. While not lacking in stopping power, Overlords were slow and their lack of turret turn speed meant that large groups of smaller anti-tank units could quickly overwhelm them (although it should be noted that when facing large number of smaller vehicles in a constricted area, the Overlord could simply run them over). They were also particularly vulnerable to attacks made from above by aircraft, although the Gatling cannon upgrade could compensate for this to an extent. Jarmen Kell's skill at killing vehicle drivers made the slow-moving Overlord particularly vulnerable to the GLA hero.

History
These things were the best of the best. If upgraded they are quite fast.

Also

Behind the Scenes
The USSR's Apocalypse Tanks of WWIII is reported to share this unit's designs.

Also, the GDI MARVs and Mammoth Tanks resembles it due to the following facts: it had four sets of threads, it can carry troops and crush other vehicles. The only difference is its size and design.