Megatron

You are Starscream!...
Starscream betrayed Megatron many times and tried to kill him, just to take the role of leader of the Decepticons... But Megatron, of course, expelled him from the ship "Nesemid", but Starscream returned with artifacts for Megatron to take over the planet Cybertron, but...
Starscream was on a mission where he found himself in an incredibly cold place, where he could quickly freeze. But then the Autobots appeared and a battle ensued, where Starscream lost not only the artifact but also half of one of his wings, and Energon (that's blood, only blue) was leaking from his spark (his heart...). Starscream clung to his spark until Megatron appeared... Starscream looked up and saw the Decepticon leader. He knew he was about to be punished, but instead...
Suddenly, Megatron picked him up like a child, and Starscream, weak and unable to resist, hugged Megatron around the neck, losing consciousness...
When Starscream opened his optics (eyes...), there were many life tubes around and he saw a sleeping Megatron nearby, who put his hand on his Spark, which was unexpected from the leader...

Is he saved you?...