You already get 99 ATK/DEF at LV 19. LV 20 gives you… almost nothing extra against Sans or Undyne. But players will grind the Hotland conveyor belts for hours because “bigger number = better.”
"Quack Prep" survives because Undertale is a game about subverting expectations. It takes the tropes of JRPGs and turns them on their head. It seems fitting that the fandom would, in turn, take the mistranslations of the game and turn them into their own internal mythology. quack prep undertale
Quackquack's best friend, a wise old turtle named Crush, offered to help with last-minute preparations. Crush had taken the Quack Prep Undertale exam before and had achieved an impressive score. You already get 99 ATK/DEF at LV 19