This is John Wick.
And these are the heroes who are similar to him.
Altair (Assassin's Creed series)
Ezio Auditore da Firenze (Assassin's Creed series)
Harry Callahan (Dirty Harry series)
Zhao Yun (Romance of the Three Kingdoms)
Yukimura Sanada (Sengoku Basara series)
Jotaro Kujo (JoJo's Bizarre Adventure)
Thomas Rogan (The House of the Dead series)
Richard Miller (Time Crisis)
Niko Bellic (Grand Theft Auto series)
Connor (Detroit: Become Human)
Robert McCall (The Equalizer series)