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The Green Incendiary Rocket (or G.I.Rocket for short) is the finalized version of technology originally created for Cobra by Doctor Venom. Upon detonation, the bombs explosively release spores that instigate the rapid growth of tendrils of organic matter, which quickly spread to cover the surrounding area. Initially developed by Cobra for world domination, the tech was appropriated by G.I. Joe for use in terraforming.

The weaponized tech can be fashioned into various incendiary forms, including bombs, missiles and grenades. Known as creeper bombs when they were in the terrorists' hands, after the name of their development program "Project Creeper", the Joes gave the friendlier name of green bombs, before what was presumably just good brand synergy saw them take on their "official" title.

Fiction

Transformers vs. G.I. Joe

Creeper technology was developed for Cobra by Doctor Venom, though the good doctor would later insist that the terrorist had forced him to create the weapons for them. When the Joes raided Cobra's temple base of Koh-Buru-Lah, they were faced with a forest of creeper vines, but were able to use the heat from their jetpack engines and their helicopter backpack blades to burn and slice a path through the vicious vegetables. They were too late to stop Cobra Commander and the Baroness from taking off aboard a Rattler with a creeper bomb payload aboard, but Scarlett was able to bring the plane down with a stolen creeper grenade she attached to one of her crossbow arrows. The Rattler crashed, detonating its entire creeper payload, generating a huge jungle of vines that dragged down all the Joe vehicles and even the alien robots that had wandered into the conflict. The Golden Boys

Some time later, when the metal world of Cybertron was discovered to have entered the Earth's solar system, Scarlett led and advance team of Joes to the planet aboard the shuttle Defiant, loaded with appropriated and renamed "green bombs". After a Decepticon strike on Earth turned the mission from one of exploration to one of counter-attack, the Joes announced their arrival in Cybertronic airspace by bombing the city of Iacon. Though the city was deserted, the attack caught the attention of a small group of rebel Autobots; scientist Perceptor was intrigued by the organic matter created by the bombs and tried studying it, but had to be saved by Brawn when the still-growing vines threatened to consume him. Following a clash with Decepticon forces, the grounded Joes withdrew to the terraformed Iacon, where they set up a base camp, using the vines to set snare traps around the perimeter. Targetmasters A team was subsequently deployed to the planet's northern hemisphere to mark the planetary engines as targets for an approaching wave of "Green Incendiary Rockets" from Earth, but when they were snagged in a turborat trap by Hot Rod, they feared they would be unable to escape before the bombs started falling. Hot Rod was then attacked by Blaster, but when debris from the bomb strikes knocked Blaster out, Hot Rod had an attack of conscience, and quickly sped his ally-turned-enemy to safety, unintentionally providing a safe exit for the Joes as the rockets landed en masse behind them. Form Follows Function

A short while later, after the Joes and Autobots settled their differences, Bazooka tried chewing on some of the leaves created by the bombs, but their techno-organic nature—a product of their growth in Cybertronian soil—proved psychoactive, and offered Bazooka a vision of Primus. Form Follows Function

Notes

• These weapons are based on the "strangler vines" from the early G.I. Joe cartoon episode, "The Vines of Evil", in which they were created by Destro, and thwarted by the Joes using heat from jet engines, inspiring the method of their defeat in this series too. The same tech also appeared in issue #44 of the Marvel Comics G.I. Joe series, where they were invented by Doctor Mindbender.