|'Mech type||Clan BattleMech|
|Engine||210 XL engine|
|Targeting Tracking System||Unknown, with enhanced ECM suite|
|Heat Sinks||14 double heat sinks|
The Wolfhound IIC is the rebuilt version of "Grinner", Phelan Kell's Wolfhound BattleMech. It is unclear whether this design ever achieved full production, and the only version of it known to be in existence is his. In authorizing the upgrade, Khan Ulric Kerensky spared no expense. It uses an endo steel internal structure and an XL engine to save weight, while also mounting six and a half tons of ferro-fibrous armor, the most that can be squeezed onto the chassis. An ECM suite provides additional defense against enemy electronics. 
Weapons and Equipment
A direct upgrade of the Wolfhound, its IIC version has better range, damage, and heat control. Its largest and longest-range gun is the arm-mounted Series 7K ER large laser, supported by a trio of torso-mounted Kolibri Omega Series medium pulse lasers which provide accurate firepower, and while a rear-mounted Series 2b ER medium laser worries any 'Mech that gets behind it. The use of 14 double heat sinks is enough to keep heat levels at a minimum as long as the rear-mounted laser does not see use. The design team charged with rebuilding Grinner were initially set on using some of the weight savings of the Clan technology to mount an anti-missile system in the design, but the technicians ultimately decided that it would go against the design specification of the Wolfhound as an all-energy weapon platform, without ammunition concerns. 
Though technically a one-of-kind design, a number of sources posit entirely different weapon arrays from the canon loadout above:
- Phelan Kell Variant
- The book More Tales of the Black Widow describes a version of the Wolfhound IIC more properly, a refit of his original Wolfhound, retaining the Inner Sphere chassis but replacing other components with Clan versions. An XL engine, double heat sinks, and six tons of ferro-fibrous armor frees up enough space to upgrade the weaponry to a large pulse laser and four medium pulse lasers, with an ECM suite added in the head.
- The pilot of the original, and only confirmed version, Phelan Kell is one of the best-known MechWarriors in history. Phelan piloted his Wolfhound IIC, "Grinner", to victory over Vlad Ward in his bid to earn a Bloodname, becoming the youngest ever to do so. By 3059, however, Kell (now Khan of Clan Wolf-in-Exile) had abandoned Grinner in favor of a Gladiator.
- Wolfhound : Phelan Kell and his original Wolfhound, nicknamed "Grinner", were captured by the forces of Clan Wolf during Operation Revival.
- An apocryphal version of the Wolfhound IIC Grinner was added to MechWarrior Online & MechWarrior 5: Mercenaries for the DLC "Heroes of the Inner Sphere" but is instead a variant of the Wolfhound chassis that utilizes Inner Sphere rather than Clan technology.
Phelan's Wolfhound IIC on Tukayyid