I've seen a couple types of bots that are especially annoying:
1. Blm spiritbonding bot that scathe claims a plasmid and spams bliz 3
(Mildly annoying)
2. Turn 4 bot that does nothing but summons and dismisses EOS on a 10 sec loop lots on all loot and leaves 200 secs after chests are opened.
(Much more annoying because turn 4 makes it really hard to try to kick the bot because you can't kick for 5 min once an instance starts, can't kick during active combat, and can't kick once chests are opened and loot is hot.)