Juggernaut:

Even though this bipedal mech resembles the original Titan Walker from Tiberian Sun, the Juggernaut's role is to provide long-range support fire, not to engage in close-range fighting. In designing the Juggernaut, GDI engineers borrowed the naval artillery technology from Red Alert and blended it with the Titan's delivery system. The Juggernaut can soften up enemy fortifications from a very long range but suffers from a slow rate of fire, deployment time, and walking speed.

Mobile War Factory:

The mobile war factory is one of the most influential units to be added into Firestorm. Though it's extremely slow and costly, the new unit lets you manufacture additional units away from your base, in essence giving you a mobile staging area for quick strikes or flank attacks against enemy forces. It's particularly effective when coupled with a few orca carry-alls.

Mobile EMP Cannon:

While the electromagnetic pulse cannon in Tiberian Sun was used as a defensive measure, Firestorm's mobile variant is primarily an offensive weapon. Like the original EMP cannon, the mobile EMP emits a high-resonance blast that instantly incapacitates all mechanical units within the blast's radius. However, this mobile unit suffers from a number of drawbacks, like an effective blast radius significantly smaller than its stationary counterpart. The mobile EMP also requires has a long recharge rate.

Mobile EMP Cannon:

While the electromagnetic pulse cannon in Tiberian Sun was used as a defensive measure, Firestorm's mobile variant is primarily an offensive weapon. Like the original EMP cannon, the mobile EMP emits a high-resonance blast that instantly incapacitates all mechanical units within the blast's radius. However, this mobile unit suffers from a number of drawbacks, like an effective blast radius significantly smaller than its stationary counterpart. The mobile EMP also requires has a long recharge rate.

Drop Pod Control Plug:

The infantry drop pods in Tiberian Sun were a critical, albeit unselectable, unit in the game. The new drop pod control plug lets GDI players call in an attack using the pods, which will deliver veteran infantry troops anywhere on the map. Prior to doing so, the drop pods will carpet bomb their landing area to clear the way for the troops. The drop pod control plug is a technology addition to Tiberian Sun's upgrade center.

Reaper:

Anyone familiar with AD&D's Forgotten Realms novels will automatically liken the NOD Reaper to the Drider, a creature with the torso of a dark elf and the legs of a spider. The Reaper, CABAL's twisted vision of Kane's Tiberium/human-evolution plans, can easily traverse almost any type of terrain and is equipped with an antipersonnel net and a pair of cluster-missile cannons, making it deadly against GDI infantry.

Fist of Nod:

The Fist of Nod is an exact replica of the GDI's mobile war factory. This unit will give NOD players the ability to set up a staging area away from their base for multiple strikes against the GDI. The Fist of Nod becomes especially effective when paired with a stealth generator.

Limpet Drone:

Like the GDI limpet drone, this mine will attach itself onto any nearby enemy vehicle and slow the vehicle's speed to an absolute crawl. NOD players will be able to see the location and surrounding area of a GDI unit with an attached limpet drone, which can only be removed by using a GDI repair bay.

Mobile Stealth Generator:

Basically a stealth generator on wheels, this unit cloaks all NOD vehicles and troops underneath its invisible umbrella. The mobile stealth generator has a much smaller area of effect than its stationary counterpart, however, and must be fully deployed in order to function - the mobile stealth generator cannot emit a stealth field when moving.

Elite Cadre Soldier (single player only)

Only available in the last single player mission of the Nod Firestorm Campaign, these units carry a pretty powerful minigun. They are stronger and more expensive than normal infantry, and about as powerful as Cyborgs. They do, in fact, have the same weapon

Core Defender (not buildable)

In the last Nod mission of Firestorm, CABAL's Core is guarded by this huge Cyborg, the Obelisk of Darkness, and CABAL Obelisk (not to mention Firestorm walls, Juggernaughts, Cyborg Reapers, and more). Anyway, this thing is almost invincible, and although it can never be built by the player. It is a very formidable opponent, and on top of the ridiculously high strength, it heals itself on its own or in the presence of tiberium. It fires a large blue laser beem (similar to the Obelisk of Light but more powerful) so don't go near it unless absolutely neccessary! Air attacks against it work best.