When gold farmers first started on my old server they would always have groups of 4 botting, all dressed the same, 3 black mages and 1 white mage, it was early on so you could definitely tell they were bots. They'd usually be hanging around the mender NPC and queing for dungeons (I assume, they'd just disappear) over and over.

The other day I saw this 5555 Free Company for the first time, doing the same thing, just standing at the mender, dressed the same. I didn't think anything of it until I noticed they were 3 blm and 1 whm. I forgot about them until I spotted them later on in all of the most popular farming spots. They never move, and never talk, they just stand there casting aoe, 3 blm and 1 whm. I tested by getting their mobs, before they could, and leading them away. They will attack the mob, but not go after it if it goes out of range, they don't move at all or acknowledge any communication. They don't attack anything slightly out of cast range. Then they just disappear, no teleporting at all.