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1
- Brock Lesnar
- 5-3-0, 1 NC
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When Brock Lesnar first came into the UFC, there had never been any other fighter to make his Octagon debut with as much hype and hatred at the same time.
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2
- Chael Sonnen
- 30-17-1
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"Uncle Chael" gained a lot of respect from fans when he took Anderson Silva to the brink of defeat at UFC 117
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3
- Tito Ortiz
- "The Huntington Beach Bad Boy"
- 21-12-1
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Former UFC Light-Heavyweight champion Tito Ortiz has always been a hated figure ever since he first entered the Octagon.
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4
- Fedor Emelianenko
- "The Last Emperor"
- 40-7-0, 1 NC
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Many people hate on Fedor Emelianenko not for personality, but because fans feel that he ducked the UFC and would not put his former title as the greatest fighter of all-time to the test.
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5
- Michael Bisping
- "The Count"
- 30-9-0
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It's one thing to taunt an opponent to hype a fight, but some of the actions Michael Bisping has pulled are just wrong.
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6
- Josh Koscheck
- "Kos"
- 17-11-0
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Josh Koscheck first gained his villainous fame after appearing on the Ultimate Fighter where his antics and bad-boy ways made viewers instantly hate on him.
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7
- Nick Diaz
- 26-10-0, 2 NC
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Before his brilliant performance at UFC 137, former Strikeforce Welterweight champion Nick Diaz was widely considered one of the most hated fighters outside of the UFC.
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8
- Frank Mir
- 19-13-0
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Former UFC Heavyweight champion Frank Mir is definitely not the most popular guy in the sport.
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9
- BJ Penn
- "The Prodigy"
- 16-14-2
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Former two-time UFC champion BJ Penn has started to gain a lot of love lately after his emotional retirement after losing to Nick Diaz at UFC 137.
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10
- Anderson Silva
- "The Spider"
- 34-11-0, 1 NC
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Nobody denies the sheer magnitude of UFC Middleweight champion Anderson Silva's career.
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11
- Rashad Evans
- "Suga" | 20-8-1
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Jon Jones may be considered one of the ****iest fighters in the sport, but former teammate Rashad Evans definitely pioneered the art of the fighter with swagger.
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12
- Tim Sylvia
- "The Maine-iac" | 31-10-0, 1 NC
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Former UFC Heavyweight champion Tim Sylvia never really got the respect he deserved from fans when he was in the UFC.
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13
- Nate Diaz
- 21-13-0
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Although not as controversial as his brother Nick Diaz, Nate Diaz gets a lot of hate from fans as well.
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14
- Jon Jones
- "Bones" | 27-1-0, 1 NC
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UFC Light-Heavyweight champion Jon Jones is clearly one of the most skilled fighters in the sport, but his demeanor and ****iness has given him a lot of haters since he became champion.
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15
- Matt Hughes
- 45-9-0
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Former UFC Welterweight champion Matt Hughes is revered by most as one of the all-time greats, having had such a dominating championship run during his Hall of Fame career.
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16
- Muhammed Lawal
- "King Mo" | 21-10-0, 1 NC
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Former Strikeforce Light-Heavyweight champion Muhammed "King Mo" Lawal is definitely one of the less popular fighters in the sport, not because of his skill, but because he's so full of himself.
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17
- Quinton Jackson
- "Rampage" | 37-14-0
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Former UFC Light-Heavyweight champion Quinton "Rampage" Jackson has gained a lot of love from fans over the years for his hard-nosed style of fighting and his exciting stand-up skills.
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18
- Ken Shamrock
- "The World's Most Dangerous Man" | 28-17-3
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Former champion Ken Shamrock is a legend of the sport for his skill in the cage as well as his less than likable behavior outside of it.
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19
- Jon Fitch
- 32-8-2, 1 NC
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There is so much to like about Jon Fitch.
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20
- Junie Browning
- "The Lunatik" | 5-6-0
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An alum of the eighth season of the Ultimate Fighter, Junie Browning is certainly not the most lovable character to ever grace the show.
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21
- Matt Serra
- "The Terror" | 11-7-0
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Matt Serra is not necessarily one of the worst characters in the sport, but his loudmouth and trash talking antics certainly has not gained him any fans.
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22
- Charles Bennett
- "Felony" | 30-42-2
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Charles "Krazy Horse" Bennett has had a controversial career as a lightweight and featherweight fighter.
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23
- Kalib Starnes
- 17-11-1
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Ultimate Fighter alum Kalib Starnes has become an infamous character in the shows history.
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24
- Paul Daley
- "Semtex" | 44-18-2
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Another fighter given the pink slip from White for his unsightly antics, Paul Daley has joined the plethora of bad boy fighters in MMA.
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25
- Nate Marquardt
- "The Great" | 36-20-2
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While fighting in the UFC, former middleweight contender Nate Marquardt drew praise from fans for his skillful performances against some of the elite of the division.