Plenty of anime characters talk themselves up and boast about their incredible powers, but not all of them can back it up. Some characters, often villains, speak from a position of power and genuinely threaten the heroes, while other characters are all bluster. If an anime character is all bark and no bite, they're bound to make fools of themselves when the talking ends and the fighting starts.
Source：https://www.cbr.com/anime-characters-who-lie-pretend/
