The Decepticons known colloquially as the Rainmakers are part of Shockwave's forces on Cybertron. Each one is a Seeker with a bright, single-color paint job. (The green member, Acid Storm, did find a more exciting palette.) They retain their original Cybertronic "tetrajet" alternate modes.
As their name implies, they can make rain. Acid rain.
The Transformers cartoon
Guess what? They lost.
- The term "rainmakers" was originally used by Bluestreak as a colloquial description of their actions. However, repeated fan usage has turned this into a widely accepted name for the group, which was eventually made official as such by Hasbro's bio for Acid Storm.
- The acid rain only affected the Autobots. Chip Chase was utterly unharmed. Make of that what you will.