The Flash: 10 Best Villains (so Far)

9. Reverb

The introduction of Earth-2 in the second season brought with it a number of new takes on characters fans have come to know, with doppelgangers turning up left and right.

In some cases, E-1 villains were heroes on E-2, like Floyd "Deadshot" Lawton's nerve-addled cop; in others, faces we were used to seeing as heroes were villains, whether it was Ronnie Raymond being Deathstorm, Caitlin Snow being Killer Frost, or Laurel Lance being the Black Siren.

Nearly all were entertaining to various degrees, but seeing the always-lovable Cisco Ramon in full-on egomaniacal mode was easily the most engaging, as Carlos Valdes relished every second on screen as the evil doppelganger Reverb.

On top of that, and despite being killed by Zoom in his first and only appearance, his impact was much larger than his fellow E-2 doppelgangers on the gang from E-1 from the get-go, as seeing what Reverb could do - both with and without his glasses - helped motivate Vibe to really explore his own potential, which only served to help the team in their ongoing fight against Zoom.