Most people see sans the skeleton as a very powerful character, and use megalovania as a sign of power. But really, if you knew the lore of
undertale, you'd know that he's the second weakest boss after
Crystal the amalgamate (snowdrake's mom) and although he does manage to kill most players the first
time, they can just reset again and again. Also, Megalovania is not sanses theme, it's doctor andonutses theme, so there. Sans as a meme built from misinformation