Tribal disguises?

[Iscah]

Many tribes already provide this. You can dress as a Vath, a Vanu, a Kojin, a namazu, a fauth, a moogle, a tonberry, a chocobo, a warewolf, an elephant, a chicken, a rabbit, an ascian, there are various horns available including ifrit's, fox ears and a lion head (which looks similar to hrothgars).

Half of that list is not from tribe quests, or just random animal costumes.