In "Batman vs Superman", the character Zod appears briefly as a corpse. Actor Michael Shannon - who portrayed Zod in "Man of Steel" - is credited as Zod, but in the actual cameo his face looks a little... off. I'm not sure if it's because his face is CGI'd in, or if it's makeup to make him look dead. Either way, Shannon would get a credit in the film credits. Granted, it's a testament to the state of CGI technology that I can't tell the difference.
Did Michael Shannon actually film the Zod scene in BvS or was it post-production work?