There are plenty of iconic anime duos who have made their mark, but none are quite as memorable as those with red and blue hair. Typically, anime duos where one character has red hair and the other has blue hair have similar dynamics across the board.The character with red hair is more extroverted, impulsive, and short-fused. On the other hand, the one with blue hair is more laid-back, introverted, and unexpressive. Their personalities balance each other out well. The red-haired character brings the blue-haired character out of their shell, while the latter cools their hot-headed counterpart down a bit.
10 Kyoko & Sayaka Are Best Friends (Puella Magi Madoka Magica)
Kyoko Sakura is the protagonist of Puella Magi Madoka Magica, while Sayaka Miki is one of the main magical girls. Kyoko has dark scarlet hair, while Sayaka has pale teal-blue hair. Kyoko's known for being stubborn and strong-willed, while Sayaka is more emotional and idealistic.
The two are best friends, though they despised each other upon meeting. In fact, Kyoko even outright mocked Sayaka's weakness and tried to attack her. However, the two endured a lot throughout the series. The shared pain brought them closer together.
9 Jellal & Erza Embody The Enemies-To-Lovers Trope (Fairy Tail)
Jellal and Erza have known each other since they were kids and were both imprisoned in the Tower of Heaven. Though they hit it off at first, Jellal's personality did a one-hundred-and-eighty-degree change. They pretty much embody the enemies-to-lovers trope.
After getting his memories back, Jellal is a calm, kind person who feels immense regret for his past. Erza, on the other hand, is a rather hot-headed but responsible person who takes great pride in being a member of the Fairy Tail Guild.
8 Saruhiko & Misaki Are Polar Opposites (K-Project)
While Misaki is the typical red-headed character with a loud, vulgar mouth and unapologetic personality, Saruhiko is a typical blue-haired character with a deadpan attitude and melancholic tendencies. They've known each other since middle school, and Misaki would always pester Saruhiko into being his friend.
While Saruhiko always blew Misaki off, he eventually became friends with him. They've had several fights throughout the series, including one that ended in Misaki threatening to kill Saruhiko, effectively ending their friendship for a while. However, they've always remained loyal friends.
7 Soma & Megumi Make An Excellent Team In The Kitchen (Food Wars!)
Soma fits all the stereotypes of red-haired characters. He's outgoing, excitable, and immensely passionate about what he loves. In this case, he's quite passionate about cooking. Soma is creative in the kitchen and creates some pretty unordinary dishes that taste better than they look.
On the other hand, Megumi is a typical gloomy but polite blue-haired character. These two make a pretty strong team in the kitchen. While Megumi overthinks everything, Soma jumps right in without a second thought. The two balance each other out well and give each other much-needed confidence boosts.
6 Sora & Shiro Are Completely Different, Yet They Bring Out Each Other's Best Qualities (No Game No Life)
Sora and Shiro are step-siblings who have completely opposite personalities. While Sora is a red-headed manipulative trickster with a destructive streak, the blue-haired Shiro is an absolute genius with a deadpan personality. Their parents abandoned them. Sora and Shiro essentially became hikikomori and escaped reality by playing video games to cope.
Though they seem like they wouldn't get along at all, Sora and Shiro bonded over their mutual love and passion for playing video games. Ultimately, they manage to bring out the best in each other.
5 Mikoto & Reisi Have A Complicated Relationship (K-Project)
While Reisi claims to despise Mikoto, he still respects him, and they were even friends in the past. While Mikoto doesn't care about his status as the king and is quite lazy, Reisi is responsible and does everything to achieve victory on the battlefield.
Reisi finds Mikoto's blatant laziness as a king appalling. He was outraged when it was revealed that, as king, Mikoto pretty much sat around and did nothing. The two frequently clashed throughout the series, proving that opposites will never attract in some cases.
4 Jessie & James Are An Iconic Duo (Pokemon)
Though Team Rocket cemented themselves as villains in Pokemon, they looked pretty good while doing so. Jessie and James have become iconic for their over-the-top schemes and hilarious defeats. Though their plans seldom work out in their favor, Jessie and James are memorable characters who provided the audience with plenty of comedic scenes. While James dons periwinkle blue hair, Jessie opts for a warm magenta with apparent red undertones.
James has a more laidback, thoughtful personality and he has a hard time grappling with the acts of his teammates. Meanwhile, Jessie is hot-headed and is indisputably the toughest member of Team Rocket.
3 Karma & Nagisa Have A Healthy Rivalry (Assassination Classroom)
Throughout Assassination Classroom, there was plenty of tension between Karma and Nagisa. They had known each other for a long time but had a falling out. Despite their history, the two respected each other.
Karma is intelligent and cunning, but he fails to apply himself in academics. He has some sadistic tendencies and gets a thrill out of humiliating others. Nagisa, on the other hand, is rather aloof and calculating. He's not nearly as terrifying as Karma, but he's undoubtedly proven himself a menacing assassin.
2 Kuroko Is The Shadow To Kagami's Light (Kuroko's Basketball)
Kagami and Kuroko are Seirin High's impressive first-year duo. Though Kagami didn't think much of Kuroko at first, he quickly came to respect his style of basketball. Kuroko is the shadow to Kagami's light. While Kuroko lacks presence, Kagami steals the show. Their different basketball styles complement each other well, making them a pretty formidable duo on the court.
While Kagami has a short fuse and lives for the adrenaline rush, Kuroko is more calculating and observant. Kuroko forces Kagami to calm down when he's raging during a game. One time, Kuroko punched Kagami in the face during their first match against Shutoku because Kagami didn't want to be a team player. When Kuroko gets in his head, Kagami's quick to encourage him to snap out of it.
1 Reki & Langa Bonded Over Skateboarding (Sk8 The Infinity)
Reki Kyan and Langa Hasegawa have pretty different personalities, but they hit it off instantly. After Langa came to Japan, Reki was his first friend. They bonded over skateboarding, and the two always hype each other up when one of them feels down.
Reki is a classic excitable, outgoing redhead who's always up for a challenge, while Langa is more deadpan and laid-back. While Reki is always high energy, Langa is more subdued and calm. However, they get equally excited about skateboarding. They have a mutual passion for their shared hobby, and it's what brought them together.