[Bloodseeker]

Originally Posted by Hooves

Rolo, the brother-angel that deeply cares for Lelouch to no limits.

Spoiler for truly:

So much so that he killed Lelouch's important and truly loving and faithful potential girlfriend in a fit of clingy jealousy as she reached out her hand in friendship, smiling with a sense of satisfaction and relief at the death of competition as Lelouch raged and despaired.

He's clearly someone who thinks of his brother's happiness and well-being first.