Combs' accusers have also written to the judge, describing how he wielded his power and influence to ruin their lives, and their fears that he would seek revenge if freed.
"I am so scared that if he walks free, his first actions will be swift retribution towards me and others who spoke up," wrote Ms Ventura.
She added that she believes he deserves a long sentence, writing: "He has no interest in changing or becoming better. He will always be the same cruel, power-hungry, manipulative man that he is."
In his letter, Combs describes teaching a class to fellow inmates on "what I did to become a successful business man", describing himself as a changed person who is now sober for the first time in 25 years.
"The old me died in jail and new version of me was reborn," he writes.
Combs goes on to ask the judge for mercy, "not only for my sake, but for the sake of my children". He asked the judge to consider his seven kids, and his 84-year-old mother who recently had brain surgery.
He notes that the judge might be tempted to make an example out of him and instead asks that he be made an example of "what a person can do if afforded a second chance".
Combs is also expected to speak in court on Friday before the judge issues his sentence. Four of his lawyers are also slated to speak, and his defence team also plans to show a 15-minute video. It's unclear what the video may include.
In July, a jury acquitted him of the most severe charges: racketeering and sex trafficking - which could have resulted in him spending the rest of his life behind bars. He was found guilty of two counts of transportation to engage in prostitution.
Prosecutors say he is "unrepentant" and argued the rapper should spend a minimum of 11 years in prison.
"The defendant tries to recast decades of abuse as simply the function of mutually toxic relationships," prosecutors wrote in a 29 September filing. "But there is nothing mutual about a relationship where one person holds all the power and the other ends up bloodied and bruised."
