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[Hostile AI] AI Defender

I discovered this mostly by accident. I blueprinted him after setting ownership to Barbarians and it saved to his blueprint. He'll attack you as soon as you place him!

The savefile edit I used to make him isn't possible anymore in the current build, but he doesn't seem to care. After some digging turns out it is, it's just buried in the entity files and not sandbox_0_0_0_