These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Alternative Character Interpretation: Tales of MU encourages this, including having a Spin-Off that gives a completely different view of some characters and events. Every major character and most minor ones seems to spark competing theories. Is Mackenzie Blaise a Mary Sue, an unrepentant sociopath, or just a normal girl who happens to be Cursed with Awesome? Was her grandmother's treatment of her horrible child abuse or going above and beyond the call of duty to raise a dangerous child? Is everything Amaranth's fault after all?
Archive Binge/Archive Panic — Mack's first year at MU ends with ch. 496; the second year is up to ch. 265. Also: 117 chapters in Jamie's Tale, 12 chapters of As The Underworld Turns, and 77 chapters of Other Tales (assorted side stories).
Big Lipped Alligator Moment: At one point, Mack begins to panic during a crucial moment. Steff responds to this by... yanking down Mack's pants and smacking her ass repeatedly with a stick. This apparently makes her focus and she sets off to resolve the situation.
Despite Puddy several times approaching Moral Event Horizon moments, and being a generally vile person, she has an extremely loyal fan-following on the forums, even in the face of hostility to and attacks on other fan favorites.
Fan Nickname — "Mack Daddy", for Mack's absent demon father.
Jerkass Woobie — Mack in the early chapters, especially with regards to the prejudice and bigotry of which she is routinely the victim, but which she also routinely exhibits to others. To be fair, much of this was taught to her as she grew up by her Knight Templar grandmother. But between the Mechans, the Arkhanites, Winnie, and just about anyone who disagrees with her, she gives as good as she gets on the Jerkass front.
Strangled by the Red String — A very odd version of it, in that Mack is not going to be allowed to be straight, or celibate, or monogamous by turns. Not only does the story conspire to get her into sexual situations, Amaranth even ordered her to perform a specific sex act with Ian on demand, at any time he wanted, after Mack admitted wanting to do so. Ian balked. He got over it.
Amaranth's imminent desire to see the good in everyone, combined (ironically enough) with her high intelligence makes her extra susceptible to this trope. She's used to be the smart one and takes it for granted she's right about everything, never quite realizing what a Horrible Judge of Character she is. This means she pulls off some really boneheaded stunts and gives Mack a lot of really bad advice, all the while thinking that she's doing what's best for her.
Mack herself has some huge moments of cluelessness, mostly derived from a total lack of social experience.
The Woobie — Two. Because of her "programming" (namely, to want to do what she's told), the early parts of the story imply, and show in only a small part, that she has suffered a a horrifying array of abuses. She very quickly gained the sympathy of both the rest of the core cast and the audience.