Shockblast

Early Life
Shockblast was the brother of the scientist Shockwave. Unlike his brother, Shockblast was violent and hyper. Before the Great Civil War, he was a criminal and met the feared Greatshot. The two became friends and worked together when the Decepticons began. The two soon joined Megatron and fought by his side to rule Cybertron.

Great Civil War
Greatshot was later sent to the front lines while Shockblast stayed in Kaon. This angered the young Decepticon, but he kept doing his work.

When Kup and his team got to Kaon, Shockblast was the first to fight them. He was beaten badly and sent back to his brother. This caused Shockblast to tell Shockwave to give him a canon arm just like Shockwave had. Shockblast got what he wanted, but this canon was much stronger. He soon learned Kup had killed Greatshot which made him sought him out. The two fought and this time, Shockblast was able to badly injure Kup. He would have been able to kill Kup if it wasn't for Ironhide who got there first.

Returning to his brother once more, Shockblast learned Greatshot had been rebuilt into Sixshot. A Cybertronian who could turn into six different modes. Shockblast still wanted Kup dead and disobeyed Megatron's order to kill him. Going out to find Kup, Shockblast ran into the Wreckers. They helped Kup and was together able to kill Shockblast once and for all.