While Marvel Studios' Thunderbolts* will assemble a mixture of heroes and villains, the movie isn't exactly following the comic books. In those, Baron Zemo assembles the Masters of Evil to pose as heroes, only for his teammates to eventually decide they really do want to do some good.

As of now, there's nothing to suggest Daniel Brühl will make an appearance as Zemo after last being shown behind bars in The Falcon and The Winter Soldier. 

However, given his history with Wakanda and tactical brilliance, it's easy enough to imagine the various ways Valentina Allegra de Fontaine might be in cahoots with the Captain America: Civil War villain (which would make for one heck of a twist in this movie). 

Appearing on the red carpet at the London Film Festival, Brühl was asked flat out if he'll make an appearance in Thunderbolts*. To that, he replied, "Next question!" with a laugh.