What ancient Roman emperor is similar to Nero?

Answer 1

It's hard to say as you don't specify in what way.

But Nero was associated with extravagance and tyranny, executing many people (including his own mother), while at the same time furthering Rome's cultural and Economic infrastructure.

While the rumour that he played the fiddle while Rome burned is now pretty much bunk as he actually ordered massive amounts of aid, saved people himself and commissioned new buildings. (although some say he started it himself to create room for more buildings he desired).

All in all I'd say that purely on the terrified nature of the city and the brazen, megalomaniacal view of certain emperors, he is most like Commodus or Caligula to a lesser extent. I'd say Commodus but only in my opinion