Blackout

"All hail Megatron!"
- Blackout reminding Starscream and the Decepticons who their true leader is. Blackout is a powerful and violently loyal Decepticon. It is rare not to see him looming silently near Megatron, but if he was not by his masters side, he would be serving him in the field. When given a target he hunts it down with fierce determination. As third-in-command, he is constantly defying Starscream's orders, especially after suspecting he preferred to forget about Megatron during the quest for the AllSpark.

Blackout also has a symbiotic companion named Scorponok.