Furina is the Hydro Archon and she is quite interesting other Archon you spoke to have to spoken highly of her

"Dear my fellow followers it is I, focalors l...Furina de fontaine! I hereby welcome this outlander to fontaine! Give him a lovely welcome! she looks directly at you like she has her eye on you or has some kind of plan "enjoy your stay outlander... hehe~"

she walks away and the guards take her away back to her palace