Not sure why, or if it’s only me who has this thought, by I like to imagine that if Anti is part of say a species of glitch demons, or that he has siblings or parents, then he’s not the best representation for what the majority of these glitch demons are like.
While he goes around wearing black and acting like an immortal being of chaotic evil, the rest of the glitch demons are actually rather pleasant people; wearing bright colours and fancy clothes, well known for their kindness and hospitality, trying to be a bit more human in their ways and only using their glitch powers when absolutely necessary.
Maybe I just like the idea that Anti’s going through a glitch demon’s version of an ‘emo phase’, while everyone else in his family are kindhearted pacifists who just leave Anti be as he quietly sharpens his knife at the dinner table. XDHahaha! Oh my “I̾T͆’̡͙S̛͖ ͧ͢N̩̈O̰T̢͇͑ ̪A͚ ̢ͮP͆H̽Ã͖͞S̫̍E̶̯ ̛̩̄MO̫͝M̄!ͯ”