Motoko Aoyama is a main character in the manga/anime Love Hina.
Background
Motoko Aoyama is the younger sister of Tsuruko Aoyama, who was heir to the decling sword school the Shinmei Ryu, she was very close to her sister adoring and idolizing her.
One day Tsuruko got married and gave up her title as heir, but Motoko chose not to be happy for her sister feeling she was being taken away and not understanding why she would do this she came to hate men.
One day Motoko came to live at Hinata Inn where she met Naru Narusegawa who had a similar mentality to men as hers.
One day Hina's grandson Keitaro comes to Hinata Inn...
Personality
Motoko is very arrogant, bossy and with a hatred to men regarding them as weak and perverted. While Motoko can be bossy and controlling it is not at the level of Naru but she is just as guilty of bullying others as she is including the other Hinata Girls especially Shinobu.
Motoko regards things like love and femimity as weaknesses thus holds them in disdain and cannot come to terms with anything she feels for Keitaro that is not hatred.
Like Naru, Motoko would often re-interpret the most innocent or accident Keitaro has as a 'pervereted thing' and would violently assault him ignoring anyone who tries to tell her he did nothing wrong.
Also Motoko is very hypocritical she talks of honor and yet she assaults unarmed, harmless and/or innocent with her sword also Motoko talks of being a samurai (ignoring the samurai class was fully abolished in the 1870's) and yet violates every aspect of Bushido:
Rectitude or Justice
Motoko does not show this, often uses it more as an excuse to bully people rather then any kind of pursuit of justice. Given how Motoko casually bullies harmless, innocent men and controls the other girls like Naru does.
Courage
Motoko shows no real courage, refusing to take responsibility for her wrongs and doing what Naru always does blame someone else, especially Keitaro. Also violates this tenant by assaulting people who can't fight back.
Benevolence or Mercy
Motoko shows little if any real benevolence or consideration to other people. Motoko is much more busy ordering everyone (except Haruka) about, then showing any real caring for how othe people feel. Motoko like most Love Hina characters refuses to treat anyone like a person with their own thoughts and feelings.
Politeness
Motoko often speaks rudely to people, often when they don't deserve it particuarly Keitaro. Also Motoko is often rude to Shinobu by never listening to her and talking down to her, for no good reason. In fact the only people we see her polite to are Tsuruko, Haruka and Hina.
Is harsh to anyone who tries to tell her the truth, practically always refusing to listen.
Honesty and Sincerity
Motoko more reinterprets this code in a mentality 'I am a samurai, everything I speak is the truth' rather then any real concern for honesty and sincerity. Motoko makes excuses for her wrongs without taking any responsibility.
Motoko also never listens to anyone who tries to tell her the truth, h
Honor
Motoko often tries to appear dignified and often fails, due to her own constant tantrums and how she constantly makes a fool of herself, with her attitude to men.
Loyalty
Motoko is not particuarly loyal at all to her family, because she barely if ever listens to her sister and is not even happy for her when she got married. Also bullies her manager Keitaro for no reason (though Keitaro refuses to assert his authority in anime and manga).
Character and Self Control
Motoko barely ever (until MUCH later in the manga) show any self control, because she would assault anyone for even the most imagined of slights, without bothering to know what was really going on.
However unlike Naru later on the manga Motoko would be redeemed not through Keitaro but eventually by her own sister who finally got her to face up to reality, her feelings (including feelings she had for Keitaro) and herself. After a duel with Tsuruko near the end of the manga its then Motoko finally matures and becomes a better person.