You'd struggle to find a villain more influential in the DCU than Eobard Thawne, at least within the last decade.
The arch enemy of the Flash (the Barry Allen version), Thawne possesses all the powers that his non-reverse counterpart does, except with a villainous demeanour to make them seem all the more terrifying. He can hop through time, cross dimensions, manipulate metal and even the very essence of someone's personality. They're awful in every sense of the word, and while there's much that can be said about the Darkseids and Doomsdays of the DCU, none can compare to Thawne.
A villain to people both on the page and off it, Zoom was responsible for DC's much maligned 2011 continuity reboot, and has even had a part to play in the upcoming release of Doomsday Clock, a book that will bring Alan Moore's Watchmen into the mainstream DC Universe. There are few villains out there able to mess with the fabric of reality as much as he can, and, considering how often continuity resets can upset heroes and readers alike, it's a pretty ridiculous trait to have.
So leave us alone, Eobard. Go mess with some other timeline.
Are there any other villains out there who you think are stupidly overpowered? Be sure to let us know in the comments below and, before you do, be sure to check out WhatCulture Comics on Twitter and on YouTube.