Sometimes I wonder just how emotionless the Tranquil really are. Some of their behavior doesn’t seem possible/likely if they truly felt nothing. Take the Tranquil that was helping Samson. He destroyed his base and poisoned himself to keep the Inquisitor from getting his research. Samson didn’t order it. He did it because he wanted to. To protect Samson. The man who saved him. This level of devotion doesn’t seem possible for someone devoid of emotion.