The following data was taken from the Character Ranking Page on MAL on the date of publication and is based on the amount of times each character is added to a user's "Character Favorites" section.
20. Akame from Akame Ga Kill!
Member Favorites: 2892
What's more dangerous than seeing Akame run towards you after saying, Homuru? Equipped with the One-Cut Killer Murasame, she won't give you a chance! She's cold-hearted to enemies but compassionate to her comrades. This is a girl you would love to have on your side. She has quite an appetite though.
19. Satsuki Kiryuuin from Kill la Kill
Member Favorites: 2951
Majesty is the perfect word to describe Satsuki. As the university's president, she has the reputation of an extremely intelligent leader standing with pride looking down on what she called her students: pigs in human clothing. She's apparently also not afraid to run around in the nude.
18. Mayuri Shiina from Steins;Gate
Member Favorites: 3038
Tutuuru! This girl is just so adorable in so many ways! Voiced by Kana Hanazawa, a notorious kawaii machine, she'll make you have violent urges seeing her do cute things. If you haven't watch Steins;Gate yet, be prepared. Be seriously prepared!
17. Nico Robin from One Piece
Member Favorites: 3039
Though she really likes pointing out morbid things that usually disgust Nami and Usopp, Robin is surprisingly the most normal person in the Straw Hat Pirates. She gives off an adult charm with her long black hair and dark clothing. Some say she looks like Michael Jackson, especially in the Fishman Island arc.
16. Mei Misaki from Another
Member Favorites: 3268
Mei was introduced to us as a creepy eye-patched girl with an alarmingly pale complexion. But as the story goes on, we discover she's not that bad at all. She's just socially awkward but she really cares for her classmates. She can be goofy sometimes too.
Member Favorites: 3287
Yukinon is a double-edged sword. She may be gorgeous, smart and wealthy but she can also leave a permanent scar on your heart! She can say blunt comments about you without a moment's hesitation. She's the type of girl you'll have a crush on but you'll be too afraid to even go near.
14. Yuuko Ichihara from xxxHOLiC
Member Favorites: 3398
We just can't accept the fact that she's a witch because she looks like a goddess! She's all powerful and she emits this weird aura of hotness and wisdom. She's also pretty strict in guiding Watanuki.
13. Azusa Nakano from K-On!
Member Favorites: 3521
The intense urge to pat her in the forehead is so strong! Azusa is the rhythm guitarist of her band, After-School Tea Time.
Member Favorites: 3598
Despite having those big bags below her eyes and her social incapability, Tomoko is probably one of the most relatable characters in anime. We laugh at her thoughts about herself and others because we also feel the same. In spite of her failed attempts to become popular, we still end up rooting for her. Though she can be very drop-dead weird sometimes, we still love her. Right?
11. Sawako Kuronuma from Kimi ni Todoke
Member Favorites: 3766
Is it coincidence that she looks like Sadako and her name is Sawako? Guess the movie wasn't released yet when she was born. This girl is very adorable and sometimes scary; a combination not really common in describing girls. Her long black hair makes her look like she's gonna come out on your television but her chibi moments are just so cute!
10. Nana Osaki from Nana
Member Favorites: 4112
She's so cool. She's so beautiful. Nana is the type of girl you'll love to hang out with. Her all-black outfit, short black hair, piercings and tattoos make up her rebellious look. She's the type of girl who does what she wants, whenever she wants, but is also a very compassionate lover and friend.
9. Kurumi Tokisaki from Date A Live
Member Favorites: 4367
She wears a black and red Gothic Lolita dress with her black hair in uneven twin tails. She has the reputation of being the most brutal spirit. What brings danger better than Kurumi?
Member Favorites: 4437
Ruri (also known as Kuroneko) is an overconfident snob at first but once you get to know her, you realize she's just socially insecure. That's what makes her adorable actually. This girl hides her cute side with a cold persona.
7. Ryuko Matoi from Kill la Kill
Member Favorites: 4543
Fearless and cool, Ryuuko is your typical tomboy crush. She lunges into danger without hesitation, even against more powerful enemies.
6. Himeko Inaba from Kokoro Connect
Member Favorites: 4613
Inaban is the vice president of the Student Cultural Society. She is a control freak. When things gets disordered, she tends to use vulgar words to maintain an intimidating appearance. What will she do if she's afflicted by a curse that's making her strip on a table?
5. Rukia Kuchiki from Bleach
Member Favorites: 4915
We all know Rukia, she never opens her heart. She's a petite black-haired girl that likes rabbits so much she'll hurt you when you insult her for it. What are your thoughts on her short haircut?
4. Hinata Hyuuga from Naruto
Member Favorites: 5003
She lurks behind trees to sneak peeks at her longtime crush, Naruto. Quite the shy type, Hinata is still lovable. Though admit it: we were all shocked by her counterpart in the movie Naruto Shippuuden: Road to Ninja. Who would've thought the sweet Hinata would be like that!
3. Mio Akiyama from K-On!
Member Favorites: 7221
Mio is an interesting character. She has this mature charm but she's so cute! Though she often acts calm and reserved, she really gets agitated when she's scared. She hates being the center of attention but she's an apple of our eyes. We just can't take our eyes off of you, Mio. Gomennasai!
Member Favorites: 9226
It's quite hard to describe Homura-chan because she changed a lot throughout the series. She's the best friend. She will remain loyal and will do anything if it's for the better of her friend Madoka.
Member Favorites: 11030
No one would be surprised with Mikasa as the most favorited black haired anime girl. Just look at those abs! She's smart. She's fit. She's beautiful. And she's a badass! She's the complete package any guy would dream about.
If you just can't get enough of these funky anime hair colors, please feel free to check out the following articles:
・Girls with Blue Hair
・Girls with Pink Hair
・Girls with Green Hair
・Girls with Silver Hair
・Girls with Purple Hair
・Girls with Red Hair
・Girls with Blonde Hair
・Girls with Brown Hair