This list compiles the most insane characters in anime that we can't turn our eyes away from. Hisoka smiles like an insane anime birthday clown who spiked the punch. Sparkles, cards, and bungee ...

In this world, anime characters with insane regeneration are among the most powerful and difficult to defeat. Even if they suffer from injuries that could end their lives or be destroyed ...

Maki Zenin as seen in the series' anime (Image via MAPPA Studios ... Kinji Hakari is yet another character who has shown to have an insane pain tolerance, despite only having one actual fight ...

One of the oldest anime characters in existence ... children who had seen war (even Astro's "father" Dr. Tenma goes insane from the grief of losing his son). Astro, a boy who was both more ...

Anime-only fans aren’t aware of this, but Jiji will turn out to be one of the series’ strongest characters. The manga currently has 176 chapters, and few characters have emerged since then to ...