I can just imagine this as a scene in a fallout game. Lonely old rich fuck hidden away for years. You ring the intercom and he’s so excited to hear another voice that he invites you in. Starts spewing shit opinions. You eventually realize he could’ve helped stop the apocalypse but built the bunker and profited instead. Look at all the loot. Inform him he can either become a smear on the wall or caretaker of your new place.