Quote Originally Posted by duckorz View Post
As a character that fails, Wuk Lamat is not a mary sue - but simply a character that is never challenged in any way for their failures, nor is ever stimulated to grow and develop, which makes her difficult to relate to and root for. She is presented with very few problems that cannot be solved immediately by the mere suggestion of platitudes of peace and happiness (or, if the situation is really difficult, food), and any difficulties she faces are summarily eliminated by the Scions near uncritical support for her regardless of any legitimate concerns we may have about her capacity to lead a massive, diverse continent. This fundamentally makes her unrelatable to us as an audience, and makes it impossible to connect with her as a human being.
I would argue she is, indeed, a Mary sue, albeit in a difference sense.

Going strictly off the definition, she falls into nearly every category one way or another. While far from "inexplicably competent" her supposed naivety and inexperience are neither shown nor impede her character whatsoever. A prime example of that being her confrontation with Bakool Ja Ja. Despite having zero build up whatsoever, she suddenly has to power to not only defeat him but his entire entourage by herself all because the story needed her to. Likewise, we're told repeatedly how powerful Zarool Ja is yet not only is punked out in nearly every scene he's in, Wuk never actually struggles contending with him. For some "inexplicable" reason, she's on par with the best of us and going toe to toe with other world superpowers all thanks to "FRIENDSHIP AND HARAMONY!!"

Suffice it to say, this also covers the unique talent or powers aspect of being a Mary Sue. And you've already aptly described how every character surrounding her is reduced to little more than a hollow variation of themselves simply there to praise her "many deeds." Even Krile and Erenville take a complete backseat in their respective storylines due to the narrative constantly relying on Wuk Lamat. Really, the only part we cannot say for certain about her Sue-dom is whether she's an author insert character. Otherwise, she's checking off most of the boxes.