Unlike many other iconic anime characters, Sakura isn't fearless, but it's her willingness to courageously push on that makes her worthy of being one of the most popular anime characters. Saitama is So Much More Than Just a GimmickSaitama from One-Punch ManSaitama is an ordinary, relatable guy who just happens to have incredible strength, a combination that easily makes him one of the most popular anime characters ever. Though Cowboy Bebop might be more popular in America than Japan, there's little denying that Spike Spiegel is one of the coolest anime characters ever. Eren Yeager Represents a Much Darker Take on Classic Shōnen HeroesEren Yeager from the anime Attack on TitanEren Yeager quickly became one of the most popular anime characters due to his distinctive personality and morals. There is no shortage of adorable and funny anime characters, but few have exploded in popularity quite like Anya Forger from Spy x Family.