Yet what about the fact that he is part of the map, the key to mob of the dead is to complete the Easter egg entirely and Romero is ultimately unable to be killed because he is part of a storyline, Brutus is just a small little boss
True brutus is fast but he doesn't shock you. Romero can run to and can only slow down but getting him in the water. Plus he can still talk a little. Brutus can only run. plus he has a weakness to being shot in the head. Romero only dies from a wonder weapon.