Fireball was created on the planet Kamino as a clone of the human bounty hunter Jango Fett to serve as a clone trooper in the Galactic Republic's clone army during the Clone Wars against the Separatist Alliance. At some point after the end of the Clone Wars and the rise of the Empire, Fireball went rogue and joined Rex's Clone Underground.
Around 18 BBY, Fireball took part in an attack on an Imperial Gozanti-class cruiser that was transporting disobedient clones from Balmorra to an unknown location. After boarding the vessel, Fireball was ordered by Echo to free Howzer and his men while he and Nemec secured the ship's bridge. After freeing and arming the clone prisoners, Fireball and the raiding party fled the ship upon the arrival of an Imperial Venator-class Star Destroyer. As the prisoner transport ship was strafed and destroyed by a squadron of V-wing starfighters, Fireball and the other rogue clones jumped to hyperspace in their ship.
At some point around the same year; Fireball was present at the Clone Underground Hideout at the B'omarr Order Monastery on the planet Teth when a brainwashed Imperial clone assassin, CX-1, was captured and brought in for interrogation. When Clone Force 99 arrived to help with the interrogation, Fireball offered to cook for the group. When the clone assassin CX-2 attacked the Clone Underground base in order to kill CX-1 for failing his mission, Fireball grabbed a flamethrower in an attempt to throw off the assassin's aim and cover the others retreat, but he was shot in the shoulder, causing him to drop his weapon and collapse to the ground. The flamethrower ignited a nearby thermal detonator, which triggered several other detonators and caused a massive explosion that killed Fireball and buried the outpost in rubble.
Fireball's unique armor.
As a clone of Jango Fett, Fireball stood 1.83 meters tall and had tan-colored skin. Fireball was extremely proficient with blasters, taking out multiple stormtroopers with ease. He was also shown to be a very capable pilot. He showed selflessness and bravery when their base on Teth was attacked, grabbing a flamethrower and jumping in the line of fire to cover the others when he saw that Nemec was downed. At the Clone Underground base on Teth, Fireball was able to cook for the troops. When the Bad Batch visited the base, he cooked food that was of Gregor's personal recipe, with his own spicy modifications added.
Fireball was equipped in standard Phase II clone trooper armor that was dyed a tint of dark green. The visor of Fireball's helmet was also green in coloration.