Zombies are hypothetical creatures of the sort that philosophers have been known to cherish. A zombie is physically identical to a normal human being, but completely lacks conscious experience. Zombies look and behave like the conscious beings that we know and love, but “all is dark inside.” There is nothing it is like to be a zombie. Source
Zombies are not real creatures, these are made only for media field. So you don’t need to be worry about this creature. People love to dress like zombies on different occasions. We have shared some images where people are dressed like zombies and it really looks real.