'The Falcon and the Winter Soldier' introduced another surprising new villain

Just when it seemed like The Falcon and the Winter Soldier had all of its players set up for the endgame, episode 5 threw a curveball that changed the MCU playbook again. That curveball was Julia Louis-Dreyfus appearing as Contessa Valentina Allegra de Fontaine, sometimes known as Madame Hydra.  

Valentina shows up early in...