I've always been fascinated by characters with egos so huge it allows them to overcome limits deemed impossible to beat and pretty much persevere through sheer arrogance. Here's a list of the most arrogant characters in fiction who talk the talk and can walk the walk.
The Proud Lion Sin of Pride and Strongest Member of the Seven Deadly Sins that gains his immeasurable power from the Sun. To Escanor, he is the pinnacle of all races and does not hate others, for it would be pointless to hate someone so beneath himself. All enemies would be wise to apologize for being born into his world.
The Prince of All Saiyans whose ego causes him to continually break his limits and achieve new levels of strength. Always eager to test his might and will never submit no matter how many beatings he takes.
A man so arrogant even the Gods are but pawns to his game. He managed to complete a successful plan that would allow him to rule the afterlife after he had died.
A young boy who's determined to be the Man who Surpasses God. To that end, he trains like a maniac and achieved levels of power that surpasses human limits. By the end of his journey, he's managed to succeed and is still bragging!
The Mad Scientist Supervillain and Supreme Dictator of Latveria whose ego allows him to have an unbreakable will and the drive to accomplish anything. More than once, has his will allowed him to become a God and fight Gods on equal footing.
The Insane Nazi Major and Leader of the 1000 Man Vampire Army of Millennium who wants to create a world of eternal war and stick it to the King of Vampires. His will allowed him to resist vampirism and he maintains his will and selfish ego kept him human and strong for decades.
A duelist of infinite ambition and a desire to surpass his limits. Nothing is above Seto Kaiba!
An arrogant monster of a man dedicated to turning Japan into a brutal land where only the strongest can survive. Inside him burns a heart of hate so intense he would challenge the Devil for rulership of Hell after his death.
