Favorites:
Link (I like all of his incarnations, but Ocarina of Time is probably my favorite)
Zelda (again, I like all of her incarnations, but BotW and OoT have my favorite Zeldas)
Ganondorf (The Wind Waker version in particular)
Skull Kid
Majora
Saria
Midna
Groose
Fi
Impa
Robbie
Kass
Sidon...