Bl0ck-M4n is not just any other kind of entity. He's a virus. A Video Game Virus that somehow escaped into reality, glitching the entire world. He exists because of A-diot.
He is usually Shy and Docile, but if he's bored, he will become aggressive. And that's bad. Because anything he touches will be glitched and bugged. And he only does that, because he thinks it's funny. And if you get your hands on him, you will be glitched. And you could also die from that. So Avoid Bl0ck-M4n at all costs. Sometimes he'll avoid you instead.
He has special abilities. He can teleport, walk through walls, and has super speed. Oh, and he can possess people if they look at them right at the eye. So do not make eye contact.
Jevil is my favorite character in Deltarune. Everytime I play Deltarune, I just replay chapter one, just to fight him again. He is literally better than any other Deltarune character. He is even better than that stupid Spamton sh*thead.