They're not evil but they do function like a kill bill style rogue gallery. You gotta fight werewolf guy, robot guy, Makoto p5 guy (which is actually 5 ninjas), the yume twins, then a whole ass ffxiv wol battalion
recently i learned there are entire online communities dedicated to archiving those patterns inside of envelopes that exist to obscure the information, so when you hold it up to light, you can't read the contents. people even make art out of it (creds in alt text)
ALT more than i could have imagined 1 by amber williams
i still hold tight to my theory that the garleans were some kind of allagan experiment originally as part of emet-selchs longterm calamity plan, most of my evidence being "there are no garlean equivalents on any shards so far"