Shockwave Transformers

  Considered to be one of the most perilous and deadly Decepticons, Shockwave was captured by the Autobots and imprisoned on Cybertron. In the Earth year 2020, when Megatron attacked Cybertron with Unicron, he instructed some Decepticon agents on the planet to liberate Shockblast. Shockblast, however, had already begun to effect his own escape amidst the chaos Megatron's attack was causing, and broke free of his restraints just as a Decepticon agent arrived at his cell, and was killed by Shockblast simply because he had no need of him. In making his escape, Shockblast killed one of his guards, Padlock, causing his other jailer, Wing Dagger, to swear revenge.

  

  Shockblast straight away rankled under Megatron's leadership, and was attacked by Wing Dagger when he led a new attack on Cybertron. Tidal Wave was ordered to aid him, but Shockblast had already collapsed an Energon Tower and dragged Wing Dagger under it, killing him, and accidentally injuring Tidal Wave. Both victims were soon reborn, however - Tidal Wave as Mirage, and Wing Dagger as the powerful Wing Saber. While Wing Saber merged with Optimus Prime as the Autobots ventured into Unicron, Shockblast defied Megatron's orders, untruthful and claiming he was under attack while sneaking off and preparing to make a power play. When Megatron faced off against Optimus Prime in the middle of an Energon reaction that had torn a fissure in space, Shockblast leaped into the middle, only to be hit by a chunk of debris and sent spiraling through the fissure, into a new region of space where Alpha Q had recreated the planets destroyed by Unicron.  

 So u can expect a come back from the rouge Shockwave in Transformers 3. I Cant wait..... Here are some cool links:

Transformers Energon Shockblast Powerlinx Triple Changer G1 Shockwave Japanese Transformers Animated - TA14 Decepticon Showwave (Shockwave) Transformers R.I.D. ShockWave