Metal-eating Balloon

The Metal-eating Balloon is an object that appears in the Sonic the Hedgehog television series. It is a green balloon that acts as an explosive.

Description
The Metal-eating Balloon is a ordinary-looking green balloon that, when thrown, will detonate on contact in a explosion that releases green gas.

History
The Metal-eating Balloon was used by Sonic the Hedgehog to destroy one of Robotnik's robots.