Monsters ignore selected players.

[Mikiii]

Hello. I have a rather odd question/request. 
Does anyone know if there is a mod that allows me to make monsters ignore selected players on the server? (ignore as in: they exist but simply don't attack that player). A command akin of

/monsterignore <player_name>

I tried looking through internet to find such a mod but cannot find it. I don't know if such command exists either.

EDIT: Monsters = as in Bowtorn, Shiver Drifter Locust Bell, Those specific ones 

Edited Thursday at 09:34 PM by Mikiii