Editing Reverse-Flash (section)

===Thaddeus Thawne===
<!-- Commented out until [[WP:FUR]] is added for use in this article [[File:Inertia.png|deletable image-caption|thumb|right|Inertia, in art from ''Flash: The Fastest Man Alive'' #5, by [[Ron Adrian]]]] -->
'''Thaddeus Thawne''' (a.k.a. '''Inertia''' and later '''Kid Zoom''') first appeared in ''Impulse'' #51 (August 1999), and was created by [[Todd DeZago]] and [[Mike Wieringo]]. Another character called the Reverse-Flash, he is a [[Molecular cloning|clone]] of [[Bart Allen]]. Inertia first fought Impulse. When Bart aged five years after ''Infinite Crisis'' and became the Flash, Inertia fought his genetic template again. Inertia was responsible for Allen's death; Wally West returned, taking revenge by paralyzing Inertia and imprisoning him in the [[Flash Museum]]. In ''[[Final Crisis: Rogues' Revenge]]'', he is used by [[Libra (DC Comics)|Libra]] and Zoom to try to get the Rogues to join the [[Secret Society of Super Villains|Secret Society]]. Inertia steals Zoom's powers, calls himself Kid Zoom, and is killed by the Rogues, who blamed him for making them kill Bart.

When asked who created Inertia, [[Ethan van Sciver]] wrote that he could only accept five percent of the credit; the remaining credit belonged to [[Mike Wieringo]] (20 percent), [[Grant Morrison]] (25 percent) and [[Todd DeZago]] (50 percent). According to van Sciver, Inertia's appearance is an inverted depiction of Impulse.<ref>{{cite web|url=http://www.comicbloc.com/forums/showthread.php?t=31402&page=4|title=Inertia . . . ! - Page 4 - The Comic Bloc Forums|publisher=Comicbloc.com|access-date=2011-04-25|url-status=dead|archive-url=https://web.archive.org/web/20110718114953/http://www.comicbloc.com/forums/showthread.php?t=31402&page=4|archive-date=2011-07-18}}</ref>

Inertia initially appeared in ''Impulse'' #50: "First Fool's" (July 1999), followed by #51: "It's All Relative" (August 1999). His greatest [[Character advancement|character development]] was in #53: "Threats" (October 1999). Inertia was not featured again until ''Impulse'' #62 and #66: "Mercury Falling" (July, November 2000), and again for another five years.

He then began making regular appearances, primarily due to Bart being the Flash. Inertia appeared in ''The Flash: The Fastest Man Alive'' #5: "Lightning in a Bottle, Part 5" (December 2006). In addition to his ''Flash'' appearances, he appeared in ''[[Teen Titans]]'' (vol. 3) as part of [[Titans East]], an enemy team, beginning in ''Teen Titans'' (vol. 3) #43 (January 2007). The storyline concluded with (vol. 3) #46 (April 2007). Gathering the Rogues, he attempted to drain Bart's powers for himself; the plan backfired when Wally returned and Inertia's equipment drained the Speed Force, making the Rogues accidentally beat Bart to death. As Inertia tried to escape, he was captured by Wally who steals his speed, leaving him immobile.

Inertia is primarily a [[Speedster (comics)|speedster]], remaining disconnected from the Speed Force after ''[[Infinite Crisis]]'' and injecting himself with Velocity 9. Although Velocity 9 has been unstable, [[Deathstroke]]'s new variety seems to have no negative [[Adverse effect|side effects]]. Inertia briefly shares his powers before his death with Zoom, who lends him his speed to pressure him into becoming a new Kid Flash. As the maddened Kid Zoom, he masters human time streams and reverts Zoom to the powerless Hunter Zolomon before he is killed by the Rogues.<ref>''Final Crisis: Rogues' Revenge'' #3</ref>

Inertia was later resurrected and trapped in the Speed Force. Inertia tries to stop Barry Allen, Max Mercury, and Jesse Quick from escaping the Speed Force, revealing that Eobard Thawne promised to release him and let him take over Bart Allen's body once the former succeeded in his plans. After Barry tries to appeal and talk sense into him, Inertia stops his attacks and runs off.<ref>''The Flash'' #760</ref>