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->''I used to be such a sweet sweet thing 'til they got a hold of me.''
->''I opened doors for little old ladies. I helped the blind to see.''
->''I got no friends 'cause they read the papers. They can't be seen''
->''With me, and I'm gettin' real shot down and I'm feeling mean.''
-->-- '''Music/AliceCooper''', ''No More Mr. Nice Guy''

When a character grows into a {{jerkass}} over time (sometimes not much of it at all). Can be due to {{flanderization}}, a FaceHeelTurn, or just another regular albeit unfortunate case of CharacterDevelopment. While a JerkAss growing into a JerkWithAHeartOfGold is a common phenomenon, especially in dramas, a reversal, resulting in this trope, is also common, especially in comedies.

This can also cause tropes like WhatTheHellHero, though whether if the character changes for the better after that is well DependingOnTheWriter. If the transition is shown as a flashback regarding a known jerk/villain, it may be a StartOfDarkness.
See also TookALevelInBadass, TookALevelInDumbass, CynicismCatalyst and JumpingOffTheSlipperySlope. When a character has this temporary for the sake of the plot, the JerkassBall is present. The [[OppositeTropes Counter Trope]] to TookALevelInKindness. Contrast BitchInSheepsClothing, who was always a jerk. A character taking his/her level in jerkassitude was genuinely nice. When a character becomes more of a jerk in an adaptation, that's AdaptationalVillainy.

[[noreallife]]
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!!Examples

[[index]]
* TookALevelInJerkass/AnimeAndManga
* TookALevelInJerkass/ComicBooks
* TookALevelInJerkass/FanFiction
* TookALevelInJerkass/{{Film}}
* TookALevelInJerkass/{{Literature}}
* TookALevelInJerkass/LiveActionTV
* TookALevelInJerkass/VideoGames
* TookALevelInJerkass/WebComics
* TookALevelInJerkass/WebOriginal
* TookALevelInJerkass/WesternAnimation

[[folder: Professional Wrestling]]
* Wrestling/{{Edge}} took several levels of jerkass on Monday Night Raw when it became clear the crowds were getting sick of him. Now if only John Cena would follow his example...
* [[Wrestling/TheWorldsGreatestTagTeam Charlie Haas]] on Friday Night Smackdown, following Dawn Marie spreading a rumor about the two of them having an affair and picking fights with his girlfriend Jackie Gayda. He decided he didn't want anything else to do with either of them and let them know it in the meanest way he could, leaving both crying.
* Takayuki Iizuka used to be a fairly unassuming tag team specialist but then he broke out on his own, attack wrestlers with a loaded glove and finding a new hobby in bullying Wrestling/NewJapanProWrestling's tv commentator Shinpei Nogami with already jerkass Toru Yano.
* Wrestling/AustinAries was already a jerkass but took it to new heights when the Wrestling/RingOfHonor fans started showing preference to [[Wrestling/SethRollins Tyler Black]] over him.
* Wrestling/MercedesMartinez started taking several levels of jerkass in World Wonder Rings Stardom in 2011 after she vowed to take their championship to the United States and started resorting to underhanded tactics to try and fulfill that vow. Then it started to crop up in the USA while she was in Wrestling/{{SHIMMER}}, where she was unusually rough with [[Wresting/{{Bayley}} Davina Rose]] and continued to attack Leva Bates after she had already won their match.
* Wrestling/BobbyRoode became much more of a jerk ass following his first victory of the Wrestling/{{TNA}} World Heavyweight Championship following Wrestling/HulkHogan's claim that he wasn't ready to hold the belt.
* [[Wrestling/BlackRose La Rosa Negra]] suddenly became a jerkass in the PWS after a couple shows in. It was eventually revealed this was because Vinny Fenucci had practically appointed her to become the next Bombshells champion in the event someone "not pretty enough" won the tournament.
[[/folder]]
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