15. Onigiri Onigiriis a classic Japanese rice ball, sometimes wrapped in nori (dried seaweed) and filled with different kinds of fillings like pickled ume, salted salmon, or bonito flakes. Onigiri is popular throughout Japan, but is also growing in popularity around the world. You may even be able to order onigiri in Japanese restaurants in your own country. Many anime series have featured onigiri, with one of the best-known examples inOne Piecewhen a girl gave Zoro her self-made rice balls while he was tied to a pole....

15. Yujiro Hanma and Biscuit Oliva (Baki the Grappler) Yujiro Hanma (“The Ogre”) and Biscuit Oliva (“Mr. Unchained”) have a very unusual friendship. When Oliva was tasked to eliminate a drug cartel, he encountered Yujiro in the area… and Yujiro left him there, stating that it’s too early to “eat” him. Both are superhumans—on the verge of being monsters—who can each defeat a troop of soldiers with their bare hands alone....

15. Karma and Nagisa (Assassination Classroom) Both having great abilities as assassins-in-training, Karma and Nagisa formed a rivalry based on who could become the best assassin inAssassination Classroom. The unusual thing about their rivalry is that they don’t openly fight each other, except during the Save Team versus Kill Team episodes in the series' second season. Other than that, they’re friendly. Their goal is to unite the class that’s divided between saving Koro Sensei or killing him, where there are two factions: Nagisa on the Blue Team (Save) and Karma on the Red Team (Kill)....

15. Buggy the Clown (One Piece) Buggy the Clowngained fame in the seriesOne Piecefor his peculiar ability, as well as being one of the legendary members of the great pirate king Gol D. Roger’s crew. And judging by his jester-inspired looks, he lives up to his appearance as one of the most comical side characters in the anime series. While Buggy was a villain in the first season ofOne Piece, his backstory got revealed over time and showed that he was a funny guy even when he was young....

15. Rock Lee & His Ninja Pals (2012) Rock Lee & His Ninja Palsis a comedy series that was the first spin-off ofNaruto Shippuden. It centers on Rock Lee, a ninja of the Hidden Leaf Village who specializes in taijutsu because he can’t master ninjutsu or genjutsu. We get to see his daily life and training in the village. The anime also shows the goals of each of the characters, with the first episode showing the rivalry between Lee and Naruto....