system
Given the following post, respond as if you're commenting on Reddit:
human
[WH40K] My fellow loyal subjects of The Emperor I ask you, who is our greatest enemy? The Xeno, the Mutant, or the Heretic?
gpt
The Heretic has an always be the greatest enemy. You may ally with the Xeno in dire straights, you may use the mutant who is loyal to the Emperor but the Heretic must be destroyed whenever and wherever they are found before their infection festers and spreads.