Cris Cyborg has signed with Bellator MMA after a messy three-year run with the UFC.

One of the best women's fighters in the history of the sport is now under a multi-year, multi-bout contract with Bellator, promotion president Scott Coker announced Tuesday on Twitter. Coker wrote that it was the biggest contract ever given to a women's MMA fighter.

Cyborg, whose real name is Cris Justino, accompanied Bellator's announcement with a video message to her fans on Facebook.

"My goal is to become the only female fighter to hold four different major titles in the same division," said Cyborg, who has already held the women's featherweight title in the UFC, Strikeforce and Invicta FC.

The final fight on Cyborg's UFC contract came against Felicia Spencer at UFC 240 in July, a bout Cyborg won via unanimous decision. The fighter and UFC president Dana White have had a long history of butting heads and White said in the aftermath of that bout the UFC was out of the Cyborg business. The UFC waived its 90-day exclusive negotiating window with the Brazilian knockout artist, making her a free agent.

Cyborg, who is No. 3 pound-for-pound among women in ESPN's MMA rankings, won the UFC women's featherweight title by beating Tonya Evinger by third-round TKO at UFC 214 in July 2017. She dropped the belt to Amanda Nunes, also the UFC's women's bantamweight champ, at UFC 232 last December via first-round knockout. That defeat was Cyborg's first in 13 years, since her pro MMA debut in 2005.

From 2005 up until 2018, Cyborg was the most dominating and fearsome force in the history of women's mixed martial arts. Justino, now 34 years old, went undefeated and won 17 of 20 victories by finish. Cyborg has beaten the likes of Holly Holm, Marloes Coenen and Gina Carano. Historically, she has also been one of the best-known women's MMA fighters in the world, drawing solid numbers on television and pay-per-view.

"I have worked with countless athletes over my 30-plus years of promoting combat sports, but there is no one quite like Cyborg," said Coker, who promoted Justino with Strikeforce. "Her ability to excite the crowd from the moment she makes her walk to the cage is special, and having had the pleasure of promoting several of her fights in the past, I am looking forward to the opportunity of promoting her once again. Cyborg is the most dominant female fighter in the history of the sport and she will be a perfect fit here at Bellator, where champion Julia Budd and the other women that make up best female featherweight division in the world have eagerly awaited her arrival."

Cyborg was brought into the UFC in 2016 at a catchweight of 140 pounds. She had competed previously at 145 pounds, a more natural weight. The idea at the time was to set up a fight between Cyborg and Ronda Rousey, but it never materialized. Cyborg was too big to get down to Rousey's 135-pound weight class and Rousey departed the UFC later in 2016.

Cyborg and the UFC had an embattled relationship even before Cyborg was under contract. In 2014, White infamously made fun of Cyborg for her appearance at an MMA awards show, saying she looked like male fighter Wanderlei Silva in a dress. Cyborg took it like White was saying she looked like a man; White has said that he was making a comment on Cyborg's past history with performance-enhancing drugs. Cyborg tested positive for a steroid and was stripped of her Strikeforce title in 2011.

After Nunes beat Cyborg last December, White repeatedly said Cyborg did not want a rematch, which Cyborg vehemently denied. Meanwhile, Cyborg felt like the UFC never truly built out a women's featherweight division in which she could compete, which was a valid criticism.

On Ariel Helwani's MMA Show in July, Cyborg said she wanted a public apology from White as a condition of her re-signing with the UFC.

"Of course, he has to apologize," Justino said. "I think he has family, he has kids. ... I don't know if he has a heart, but I think one thing he's doing is not just touching me, because he doesn't like me. He's touching the people around me, he's touching my family. It's not right."

The rocky relationship came to an end in earnest after UFC 240 when Cyborg's team posted a doctored video online that inaccurately quoted him in subtitles while talking to Cyborg backstage in Edmonton, Alberta. Cyborg apologized on social media, but White said in an interview on the UFC's YouTube channel that the promotion was done with Cyborg.

"I'm going to release her from her contract and I will not match any offers [she receives]," White said. "She is free and clear to go to Bellator or any of these other promotions and fight these easy fights she wants. Done. Done deal. I will literally, today, have my lawyer draft a letter to [Justino's team saying] that she is free and clear."

In the Bellator release announcing her signing, it makes note of the promotion's healthy women's featherweight division, including Budd, who has won 11 straight.