Akane Tendo (Ranma 1/2)

Akane Tendou (天道 あかね Tendō Akane?) is the leading female and deuteragonist of Ranma ½. She is the youngest of Soun Tendo's three daughters and one of the heirs to the Anything Goes School of Martial Arts.

Why She Sucks

 * 1) While not entirely confirmed, she can be abusive to Ranma even when he's telling the truth. For example, in episode 10 she beats up Ranma because she thinks that he was being a creep, even though he is trying to get P-chan back to his original human form. This happens so often that we're surprised Ranma hasn't broken up with her yet, despite having other "secondary love interests" (or "love rivals" in Akane's case) such as Shampoo and Ukiyo.
 * 2) She can get salty for the pettiest reasons. In one episode, she gets spiteful when Ranma pointed out her flaws by saying She’s always stubborn & get angry all the time, proving she can't take criticism.
 * 3) She labels Ranma a pervert even though it’s not intentional. In the first episode, when she finds out that Ranma is in fact truly male, she became furious upon realizing that a boy actually beat her instead of a girl. They also unwillingly saw each other naked in the bathroom, thus calling him a pervert even though she went the bathroom when Ranma was already there, so wouldn't that make her the pervert? She even tries to justifies this by claiming "it’s different when a girl sees a boy".
 * 4) She rarely gets punished for her actions.
 * 5) In her first appearance, it is revealed that she hates boys, which is not a good first impression of her character.
 * 6) She sometimes gets furious with Ranma just because he’s with a girl other than herself, especially when she can’t even admit she likes Ranma.
 * 7) She's a poorly written tsundere character which lead by one of The Mean Popular Girls like Sakura Haruno and Amy Rose.

Bad Qualities

 * 1) Sometimes, she is decent and not mean-spirited.
 * 2) She sometimes has a reason to be angry especially since Ranma isn’t entirely innocent either.
 * 3) Her design is cute.
 * 4) Deep down, she does care about Ranma.
 * 5) She goes through some decent character development throughout the anime, becoming less overly-hateful and mean-spirited as the series progresses.