Since the PF Wiki only has fourteen words to say about three unnamed goddesses, Delmoth gave me the okay to elaborate. Here’s a Sunday-morning’s worth of making stuff up while waiting in the car during my wife’s grocery run:
Holy Symbol: silver brooch in the shape of a folding fan. On the ‘fan’ is imagery of a black cloud and white cloud joined by a rainbow.
Inspiration behind their Physical Forms: FAN is an acronym for Fairy, Amazon and Nymph, which are the goddess’ forms. In the case of Aella and Nephele, they are actually a fallen amazon and a cloud nymph in the Greek myths. Iris is the goddess of rainbows, so I based Her form on the Lyrakien Azata: “This tiny woman has a lithe form with delicate butterfly wings. She is surrounded by sparkling lights and gentle rainbow arcs.” There is also some art depicting Aella as a harpy, or taloned Valkyrie, and she is a man-hating corrupted amazon in Wonder Woman. Nephele is the mother of a centaur, though I chose to keep any lovers or children as vague as the religion itself is, canonically speaking.
(Oh! And the brooch is silver because every cloud has a silver lining.)
Some “Facts” Pocky might mention are Greek Myths retold through a biased game of telephone. Anything that contradicts her understanding of the Cloud Sisters is blasphemy. Pocky won’t be mad, just disappointed.
Iris (LG) is the watchful eye of the hurricane, and the heavenly messenger who sheds light on the Mothers Superior. The most blessed nuns can sense the warmth of this daintiest of deities seated in their open palms.
Aella (LN) is the raging storm best known for the “lightning kick” of her electrically-charged talons. She does not trust the world of man; thus it is by her decree, only women are to be trained in the secret fighting style of The Sisterhood.
Nephele (NG) is the beauty who bears the thunder. It is known that lightning comes before thunder, and there is calm before the storm. Thus, the Order of the Cloud Sisters does not waste the air of their lungs on boasts and threats; only Truth and communication to one’s sisters-in-arms need be bellowed. Else, silence and soft-spoken words suffice. Goodness begins with etiquette.