|Appears in||Keen 4|
|Harms Keen?||Not directly, Yes with bolt|
|Shots to defeat||Immortal|
Thunderclouds are an interesting example of camouflage and innovative adaption. They spend most of their time high in the sky hidden amongst real clouds, disguising themselves and looking exactly like a normal cloud unless threatened.
When threatened, a Thundercloud will open its eyes, get a fix on its attacker and aim a bolt of high power static electricity at them. Thunderclouds are impossible to dispose of, being immune to neural blasts. Touching the cloud itself doesn't harm Keen.
See also List of Keen 4 Creatures.