Keanu Reeves looks suave in a dark grey suit as he films John Wick 4 in Berlin

Keanu Reeves, 56, clips his dark locks back with hair slides

Christina Ricci added to cast of The Matrix 4 with franchise faves Keanu Reeves and Carrie-Ann Moss

John Wick 4 with Keanu Reeves adds Donnie Yen to cast to portray friend of titular character