Ion Storm

Nova Storm is a Decepticon from the cartoon portion of the Generation 1 continuity family.

Ion Storm is the blue one on the middle.

One of the formiddable Rainmakers, Nova Storm is an electrokinetic, able to personally generate EMPs.

Fiction

The Transformers cartoon

When a group of Autobots (and Chip Chase) journeyed to Cybertron to fetch a cosmitron for a wounded Optimus Prime, Megatron sent the Rainmaker trio, including Ion Storm, to make things difficult for our heroes with some acid rain.

Guess what? They failed. Divide and Conquer

Ask Vector Prime

The Rainmakers were among the deadliest subordinates of Shockwave on Cybertron and Earth in many universal streams. Vector Prime considered himself fortunate to have never encountered an iteration of Ion Storm. Ask Vector Prime

Notes

• Despite the many different designations thought up by fans, the yellow and the blue Rainmaker went officially unnamed for over 30 years until a 2015 entry of the Facebook edition of Ask Vector Prime named the yellow one Nova Storm and the blue one Ion Storm.
• 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.