Our "actual" experience? We've fought them once. In this case, having a Taraxa in a doctor's head just makes sense.

[He sighs, frustrated. How else would the doctor be able to be so effective in hurting this city's population?

He goes on:]

What you think is necessary is gonna be different from other people. It doesn't matter what we are. Alive. Dead. Paladins. Or even a leopard like Belore. We're gonna have different ideas.