Following the introduction of the M36 GMC into the American tank destroyer units, there was a desire to implement as many 90 mm guns as possible to improve the overall American anti-tank firepower. One proposed method was to install the 90 mm gun into the M18 GMC to utilize the M18's great mobility. The design came about by simply placing the M36 turret onto the M18 hull. This configuration, nicknamed "Super Hellcat", proved suitable but World War II ended prior to the design entering production and issuance.

Introduced in Update 1.51 "Cold Steel", the Super Hellcat (or the Super Hellcat) presents the firepower advantage from the M36 with the mobility of the M18. The 90 mm would allow the Super Hellcat more firing opportunities, penetrating more armour that the original's 76 mm may not be able to go through. The biggest benefit is the availability of the M82 shell, which coupled with the Super Hellcat's great ability to flank around the enemy can allow the shell to penetrate frequently into the enemy tank's side armour, utilizing its potent post-penetration damage to quickly neutralize the targets in as little as one shot.