CREEPER SPORES. Genetically engineered plant spores that grow extremely quickly to become dangerous mutant creeper vines. The spores were the creation of Cobra scientist Dr. Mindbender and they were first tested against a small team of Joes in the deserts outside Las Vegas, Nevada. The vines grew out of control, trapping the Joes and their vehicles. The vines can also burst to release nerve gas. The Joes later found a way to defeat the vines, and they never encountered them again.

Similar "creeper vines" were seen in the G.I. Joe cartoon series.

(GI 44)