My favorite is always going to be Midna, but I'm now leaning to my least favorite being the Master Sword itself. Where do I even start. Fi, mostly because not only is she annoying, but the fact that she can talk even through the Master Sword and Breath of the Wild. Honestly just makes a lot of continuity errors the more you think about it in the series, like why hasn't she ever talked to Link throughout the games beforehand. It also doesn't help that the Master Sword can be tainted in Breath of the Wild onwards, just retcons the fact that... Oh, I don't know... Demise is trapped in the Master Sword as well. Have you ever thought of what would happen when he's released because of it breaking? I could understand if Fi couldn't talk because Demise was preventing her with the conflict in the Sword, but even that doesn't makes sense. The sword is supposed to be pure, repelling darkness, and untainted by evil. The series has been retcon entirely by Skyward Sword when you think about it. And people say Breath of the Wild retconned it, it's been retconned since the very beginning! Also, didn't Zelda say in Twilight Princess that the Master Sword was made by Ancient Sages? I don't see any in its creation in Skyward Sword.