You got

Severus Snape.

You carry a wound so deep it has become your entire identity, and you've built a fortress of bitterness and competence around it. You are capable of extraordinary love and extraordinary cruelty, often in the same breath. The tragedy of your life is that the thing that made you a hero — your capacity for devotion — is the same thing that made you miserable.

• bitter
• devoted
• brilliant
• complex
• self-sacrificing