The Violent Pacifist

You want a character who truly believes in non-violence and is truly dangerous, with neither side secretly fake. Give it the story context and the roots of both the pacifism and the violence, and it helps make the contradiction hold: what the character does under pressure, how the two sides argue inside them, and the moments that make both convincing.

I want to write a character whose contradiction is that they genuinely believe in non-violence as a principle and are genuinely dangerous. Not one secretly overriding the other but both real at the same time.

Story context: {STORY_CONTEXT}
Origin of the pacifism: {PACIFISM_SOURCE}
Origin of the capacity for violence: {VIOLENCE_SOURCE}

Help me make both sides of the contradiction feel real. Show me: what the character's internal line is and how they have drawn it, what crosses it, the way they live with the cognitive dissonance, and a scene that forces the contradiction to surface in a way the story cannot ignore.