In action anime like My Hero Academia, the viewers aren't "supposed" to cheer on the villains or other antagonists, and even ...
DC Comics have some severely overpowered villains that have to be nerfed just so the heroes have a chance to win.
Marvel Comics has several villains who are so overpowered that the company has no choice but to nerf them so they can lose.
Goku has always been rightfully seen as one of the strongest characters in Dragon Ball, but there are a handful of villains even he could never beat.