The TIE Heavy series is a number of TIE Interceptor variants fitted with more powerful power generators. In most models, this improved energy output is funneled to improved weapons systems. The heavier guns come at a minor reduction to manuverability and some loss of speed, putting them in the same class as T-65 X-Wings. There are four major varients, simply designated "Heavy Aurek", "Heavy Besh", "Heavy Cresh" and "Heavy Dorn". In addition to these, there were a number of other models produced in small, squadron- or wing-sized lots, and are rarely encountered. The Heavies are often found in elite units or in the hands of squadron and wing leaders, where the heavier fire-power is put to good use.

The Heavy A carries an additional pair of laser cannons in the chin mounts, improving the energy through put by 33% over the standerd TIE Interceptor.

Heavy B's carry a pair of ion cannons, and are in demand for units supporting the Inquisitus, Intelligence and the ISB.

Heavy C's are equipped with a pair of long range auto-blasters, which while they don't hit very hard, they have nearly two-thirds greater range over the regular laser cannons.

Finally, there are the TIE Heavy Ds, which are not slower or less manuverable than the Interceptor, but carry a heavy shield generator. All Interceptor's under Grand Admiral Thrawn's command during his resurgence nine years after Endor were upgraded to this standard.