From the FAQ.
We seen Niles shrug off losing limbs, head, guts as minor inconvenience.18. How do ghouls respawn? Are there some respawn points? Do they reappear where they were destroyed? How random is it?
Depends on the player’s level. Newbies tend to respawn in the new player zone, but more experienced players sometimes do respawn closer to their objective,
Niles is heavily implied to be a ghoul.
While they don't ONLY kill, much like MMORPGs muderhobos, their quests are mostly tied to killing. Or causing deaths.
Would players in MMO care if a faction calls them evil?
Smile foundation is all about Death. Their experiment is super focused on death.
Also double checking Tobi Chapters never did Ghoul Adventuring party mention Rauel, they just said "we have the same quest", which is more for manipulating Tobi than a statement of purpose.