At the start of Dawn of Justice, we see a flashback where Bruce Wayne was present in Metropolis while the highly destructive battle between Superman and Zod was happening at the climax of Man of Steel. All over downtown, bulidings were getting trashed, and a Wayne Enterprises building was right in the middle of the action.
We see Bruce Wayne on the phone with... someone... an older man in some sort of supervisory role, and he's urging the guy to evacuate the building. But it's not particularly clear who the guy is, especially because it really sounds like Bruce is calling him "dad", but we know that his father is long dead at this point. So who was he supposed to be?