Sarnak Crypt raider(LOIO), and its brain - Resolved
 

This guy's for necro 3rd rank helm...
Spent forever trying to find this guy up near explorer tower(1500,-200 ish) in LOIO got him to spawn finally, killed him and no brain. I couldn't find any proof its 100% drop rate, but from reading over the various threads on allakhazam it seems its a rare mob not a rare drop (no one said anything about not getting the brain after killing him).

I could have just been really unlucky, though :)

Fixed