Which NetHack Monster Are You?

This made my day:

If I were a NetHack monster, I would be a mimic. I can be whatever you need me to be - it might look like I'm here to help you, but really you're here to help me.

If I were a NetHack monster, I would be a mimic. I can be whatever I think you need me to be – it might look like I’m here to help you, but really you’re here to help me.

Which NetHack Monster Are You?

I laughed until I mimicked a boulder.

(if by some strangeness you know me but don’t know what NetHack is, start here)