Cartaphilus
Also known as: Joseph, the Wandering Jew, the Magician of the Flow
Cartaphilus is an enigmatic immortal who appears as a young boy despite his age. Legend has it that he was cursed by the Son of God centuries ago, though the exact circumstances remain unclear. Whatever his origins, he's spent the intervening centuries wandering the world with little direction or apparent purpose.
He's best known for his obsession with experimentation—conducting tests on both the living and the dead with a detached curiosity. Fans and scholars have noted that he doesn't seem particularly driven by any grand goal anymore; if anything, he's forgotten why he started experimenting in the first place. He just does what feels right at the moment.
There's something monstrous about him, though not necessarily in appearance. It's more in his fundamental nature—he operates on whim and impulse rather than morality or reason. He travels constantly, leaving a trail of bizarre incidents and strange encounters wherever he goes. Whether he's genuinely searching for something or simply passing the time across centuries is anyone's guess.
Content compiled by AnimeList.moe from publicly available sources.