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.
Glurge: Through all of the hardships that Clare went through upon becoming a claymore, considered to be a failure and ridiculed because of so, she was able to press on because she always had Teresa with her... Very literally so since Clare was able to become a claymore by having the flesh from Teresa's decapitated head implanted in her.
Roxanne's habit of Mega Manning the signature techniques of more powerful Claymores then killing her teachers was born of a twisted internal logic that makes putting her down pretty much mandatory, but watching an Awakened Being rape and torture a far weaker Claymore to death without lifting a finger to help moved her from the "Cut her head off now please." category to the "Will someone invent the wood chipper so she can be fed to it feet first?" category in the eyes of many readers.
Villain Sue: After many contenders, the true Villain Sue can only be, without a doubt, Priscilla.
The Woobie: By this point, it is easier to count the characters who are not Woobies on hand. The men of the organization, bandits and most male Awakened. Everyone else needs a hug, a glass of milk and a plate of cookies.
Cassandra, a Shrinking Violet who has, by chance, discovered a technique that she loathed but which propelled her to #1 of her generation. The only person who didn't loathe or fear her, the nameless #35, was killed in a disgusting, brutal, and completely senseless manner due to a Manipulative Bitch's machinations. Then, she was summarily executed by fellow Claymores. And on top of that, she was resurrected, brainwashed, sicked on her fellow warriors, and, as of chapter 119, seems to have Awakened.