Saria and Yali rough sketch

Saria and Yali

"I heard they are grating forgiveness, well I willingly forgot about them"

Friendly, wise, a wonderful friend and great confident. There's nothing about Saria and Yali that you wouldn't like. They were made out of the love of the Great god tree to help him heal the world of Toerre. As every Kokiri, Saria was born to live and serve at the Great Deku tree in order to restore whatever could be wrong with the Lost Woods and, if possible, with the rest of the world.
Saria and Yali have been living for a bit more than a century now and they have spent many of these years outside the forest. They have grown to love at the rest of Humankind and, sadly, they know that most of the people have a very short life spam. They know what it feels to see at somebody you love grow old and then leave the living world. However, that doesn't mean they are gonna sulk their days and do nothing about it!

Saria and Yali become a huge support for the Quetzals in Hyrule, even though the Deku isn't too happy with that. The Quetzals are known for being nor good or evil; they are just what they are. They don't take sides other than when it comes to save their own world. They may make alliances with different countries and religions but they don't convert to them or become mercenaries or try to impose their beliefs.
In fact, the Quetzals don't try to lecture the world; they just do what must be done.
Or as Saria once said: "They just do what Toerre would do"

Saria is, as everybody knows, the Forest Sage and as such she's capable of controlling the great forest, the rate of their growth, their movement, etc. She's well known for being capable of turning forest into walking giants that are as big as whole cities. She's pretty much what most people would consider a "goddess" of the nature.
Animals and spiritual beings are at her orders and she proves to be more than just once the key of the victory for the Quetzals.

Her most powerful weapon is, as I already said, the Giant Forests, but she can also take a handful of seeds and turn them into a small army of wood creatures to fight for her.

Saria and Yali act like just one person most of the time. They are always together and definitely know how the other think X3 it's kinda creepy, actually. While Saria looks more mature and wiser Yali is very carefree and sometimes lazy.
Saria is a cleaning freak. If it were for her she would clean up all the temples of Hyrule to invite people to live in them X3 in fact, she's the one to do most of the cleaning in the Forest temple (place where most of the Quetzals are living) and she plays quite well her role of hostess. In fact, she's kinda convincing at the other sages to open the gates of their temples so people can live in them. She claims it'd make so much good to Hyrule and the planet if they do so.