Board Thread:General Discussion/@comment-25588272-20150925172803/@comment-25588272-20151123235611

AwesomeTrinket wrote: You forgot one.

Athena / Iris are not sisters, they're actually the same person, Athena is the dark side, despite being a water element, and Iris is the good side, considering she's a light element. That might be your headcanon - or actual canon - but it's not my headcanon, especially since I didn't know those two existed at the time.