Warning! FULL SPOILERS for The Flash Season 4 ahead.
At Comic-Con 2018, The CW unveiled a new trailer for Season 5 of The Flash, that hints at a terrifying new threat whose powers will “present a problem for Team Flash that they’ve never had to deal with before,” according to showrunner Todd Helbing. You can check out the trailer below.
The new villain that will be giving The Flash a run for his money is called Cicada, portrayed by Chris Klein (American Pie). In the comic books, Cicada is described as someone who worships The Flash and has a group of followers that are hell-bent on killing everyone the speedster has ever saved, using daggers shaped like lightning bolts.
Source: IGN.com The Flash Reveals a Terrifying New Villain for Season 5