noun which may take the genitive case particle 'no'
strongest ever; most powerful in history
Used to describe someone or something as the strongest or most powerful of all time, often in sports, games, or hyperbolic contexts.
彼は史上最強のボクサーだと言われている。
He is said to be the strongest boxer in history.
このゲームのラスボスは史上最強
The final boss of this game is on a historically difficult level.