Sugar Bear Reveals He's Fighting for Visitation of Honey Boo Boo During Explosive 'From Not to Hot' Reunion

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Mike "Sugar Bear" Thompson is ready to fight for visitation of his daughter.

During Friday's dramatic reunion episode of Mama June: From Not to Hot, Sugar Bear slams Mama June Shannon's claims that he hasn't tried to visit his daughter, Alana "Honey Boo Boo" Thompson, since his wedding to Jennifer, and announces he's started the process of getting legal visitation.

EXCLUSIVE: Sugar Bear Rips Off Shirt, Angrily Lunges at Pumpkin During Reunion Episode With Mama June

The reality star teased "paperwork" and "the truth" throughout the entire episode, but ironically, it's Mama June's pleas that he "be honest" that set Sugar Bear off into a huge explosion. He angrily called his ex a "b***h," and even lunged at her 17-year-old daughter, Lauryn "Pumpkin" Shannon.

"I got you too! I got you too," Sugar Bear yelled at Pumpkin, who was held back by the family's security guard. "C'mon then!"

"F**k you, you dumb piece of sh**," Pumpkin shouted. "That's why you're a f**king piece of sh** father."

While Sugar Bear eventually headed back to his dressing room to cool down (after ripping his room apart), Jennifer kept her cool and came back to speak with Mama June -- and reveal the secret they had been keeping for the last hour.

EXCLUSIVE: Mama June Opens Up About Her Current Relationship With Sugar Bear: 'He Pisses Me Off'

"He is doing the legitimation for Alana to go to court to get visitation," Jennifer revealed. In Georgia, the father of a child born out of wedlock needs to obtain the document to have legal rights to his child.

"I can guarantee you that he will never get custody or regular visitation of Alana as long as I'm motherf**king alive," June shouts. "I"m telling you, y'all are in for a treat, because that baby daddy drama is for real. Game's on. You wanna play? Let's play this."

The mother of four claimed earlier this week that Sugar Bear was "very emotionally and physically" abusive, and alleged that he injured Pumpkin.

Sugar Bear denied his ex's claims, telling ET that the "abuse allegations are not true."

WATCH: Mama June Claims Sugar Bear Was 'Very Emotionally and Physically' Abusive

In an interview with ET earlier this month, Honey Boo Boo called her relationship with Sugar Bear "non-existent."

"He calls me every once in a blue moon, so if there's a blue moon outside, he's going to call me," the 11-year-old reality star revealed, also claiming that he had made fun of her weight.

See more in the video below.