Here is everything you need to know about the five creepiest anime heroes.

Hanako (Toilet-Bound Hanako-Kun)

Yuji Amame — better known as Hanako-kun is the ghost of a young boy who now roams the corridors of Kamamome High. He looks for ghosts to help and keep demons at bay. Hanako seems like a mostly innocent, brutally honest middle schooler. But his true colors shine through when dealing with enemies.

Hanako becomes so serious and deliberate with his chef’s knife in hand that he even terrifies his new partner. Hanako may be the school’s small protector, but he has a menacing side that hints at a darker past.

Read this: Anime Heroes That Once Worked For Villains

L (Death Note)

When a mysterious vigilante begins murdering people across Japan, the country’s number one detective rises to discover the culprit. L is a brilliant strategist who never misses anything. He notices every tiny detail so vividly that he almost captures the elusive Kira in Death Note.

However, L does not look that impressive. He wears plain T-shirts and sweatpants and is often barefoot. He also crouches on chairs instead of sitting on them. Plus, his tied eyes tend to haunt whoever he is looking at.

Armin Arlert (Attack On Titan)

Armin Arlert used to be a shrinking violet when it came to any sort of physical confrontation. However, his intelligence has always served him well, a fact that saves him from dying in a later episode.

Armin eventually becomes the Colossal Titan by eating Bertholdt Hoover. He towers higher than the citizens of Paradis and Marley. He is no longer afraid of losing casualties as long as they are not his friends.

Shinichi Izumi & Migi (Parasyte: The Maxim)

When aliens Parasites invade Earth, one takes up residence in Shinichi Izumi’s hand instead of consuming his brain. Now trapped in Shinichi’s hand, Migi and its host work together to fight other Parasites and protect humans.

Though Shinichi looks normal most of the time, his hand becomes utterly terrifying when Migi appears. Not only does it have an eye and a mouth, but it changes shape and can wield wickedly sharp blades. Migi is one hand that enemies do not want to fight with in Parasyte: The Maxim, especially when it disobeys Shinichi’s wishes.

Read this: Five Most Ruthless Shonen Heroes

Ectoplasm (My Hero Academia)

Ectoplasm is one of the many Pro Heroes and teachers at U.A. High School from My Hero Academia. Despite his job description, many people have a hard time not being terrified of him for his otherworldly, toothy look and the way he glides around using his Quirk.

While his look is congenital, and he glides because he lost his legs in a villain encounter, Ectoplasm still does his job to perfection. He even helps the U.A. students train by pretending to be a villain himself. Ectoplasm is a normal teacher who cares about his students, but he looks more like a horrifying villain than a hero.