The Wolfkiller was originally dreamed up in late 3050, after the first information had come through about the Clans and their weapons of war. The Mad Cat, later to be known as the Timber Wolf, was perhaps the most feared OmniMech amongst the Clans' arsenal in the eyes of the Inner Sphere nations. MISFIT sought to duplicate the OmniMech's capabilties as much as possible with their own design, but refocused its energies into implementing Omni technology as a general rule in its products rather than focus on a single BattleMech, so the project was put on the backburner for several years.

       As conflicts came and went, and the Federated Suns' desire for expensive OmniMechs waned, MISFIT decided to resurrect the Mad Cat project they had long since idled. With the Civil War approaching, the engineers at MISFIT knew that more war material would be necessary. Unfortunately, almost the entire current product line at the time consisted exclusively of OmniMechs.   MISFIT decided to turn back to the more traditional BattleMech, and the reborn MCT-D1 Wolfkiller was the first in that effort.

       Taking a page from the earlier Rakshasa, a design that MISFIT's engineers believed was a poor attempt to mimic the Clan Timber Wolf, the R & D crew went to even greater lengths to duplicate the look and feel of the original Clan design. The work done is so close to the original, many on-board warbook systems have mistaken the Wolfkiller for the authentic Timber Wolf. This is due to the extensive research and study put into captured salvage and intact Timber Wolves back in the initial Clan invasion. One major innovation the MISFIT crew made was the inclusion of hands on the inside of the arms assemblies, allowing the Wolfkiller to use a club, pick up material, and fight more effectively in a close-combat situation.

       The Wolfkiller is slower than its parent design by twenty-five percent of its maximum speed, but it still keeps the newer design in good stead amongst other Inner Sphere designs of similar weight. Four MISFIT Angel jump jets are mounted in the torsos and legs to mitigate this speed deficiency and aadd some mobility to the Wolfkiller, granting it a maximum jumping distance of 120 meters. Using the tried-and-true Shelby-Ford Cobra 300 extralight engine and endo steel composites for the chassis, there is more than enough mass left over for a full weapons package.

         The single deficiency is purported to be the heat exchange system, as the Wolfkiller's twelve double-strength heat sinks can only handle a single burst of the main guns once without the 'Mech's heat scale going off the board. Originally, the MCT-D class was to mount extended-range large lasers in the arms, but because of the heat issues, and the inability to mount triple-strength myomer to take advantage of the Wolfkiller's heat issues, standard heavy lasers were used instead. Almost fifteen tons of standard Durallex armor make sure that only the heaviest weapons will make a huge initial impact on the 'Mech's sturdy frame, and CASE protects all ammunition reloads.

       The current D1 model carries paired Diverse Optics lasers in each arm, one each of the heavy and medium variety, with the mediums extended-range types. A single Magna 400P medium pulse laser resides in the head for additional close-combat potential. The 'Mech's true firepower comes from its torso weapon assemblies, namely the Mydron Medium Rotary cannon in its right torso and the triple mount of Holly LRM-5 Narc-enabled racks in its left torso. Both ammo-reliant systems are supplied with two tons of ammunition, and each torso has cellular ammo storage equipment to guard against explosions, saving both the pilot and a large amount of the 'Mech in case of such an event. The original D1X prototype carried a Mydron Medium Ultra cannon in place of the newer rotary style in 3052.

       The Wolkiller entered service in the middle of the Civil War in limited numbers on both sides of the conflict. While it wasn't being used against its intended opponents, the Clans, the Wolfkiller struck fear in the hearts of its enemies that their enemy was fielding Clan technology instead of lower-grade Inner Sphere equipment.

         Two variants of the Wolfkiller exist, the D2 and D3 models. the D2 replaces the rotary cannon with a quad-mount of LRM launchers like those found in the left side of the D1, and a fourth is added to the left torso missile box. It is apparent that this model is intended for longer-ranged combat.
        
         The D3 version replaces the left torso LRM racks with another rotary cannon as found in the right torso of the D1. Additionally, the head-mounted pulse laser is replaced with a pair of extended-range medium lasers from Diverse Optics, identical to those found in the arms. In order to fit the second rotary autocannon, the jump jets of the D1/D2 models had to be removed.

         MISFIT also offers to replace the laser or part of the laser array in order to install a C3 slave unit in its "DC" subclass.

         Lastly, the "new" Wolfkiller has inspired the Skunkworx/MISFIT design team to create a "Wolfkiller-lite" in the form of the 55-ton Wolfkit medium BattleMech.

       Unlike previous MISFITofferings, the Wolfkiller has been available to all customers for purchase, although most requests have come from mainly mercenary outfits, the DCMS, and the AFFS, as well as other units previously fielding Rakshasas.