Dr. Arnold Klein realizes there is a "strong possibility" he is the father of Michael Jackson's two oldest children, Prince Michael, 12 and Paris Jackson, 11.
His lawyer, Mark Vincent Kaplan, admitted this on the record.
"There was a strong possibility that the two older kids could be biologically linked to Dr. Klein. And Dr. Klein was well aware," Kaplan told Us Weekly.
The attorney was explaining why he and Klein went to the guardianship hearing for Jackson's children, who are living with Michael's mom Katherine.
Us Weekly first reported that Dr. Arnold Klein - Jackson's dermatologist - is Prince and Paris' biological father. Debbie Rowe, who worked for Klein for 23 years, is the biological mother, and was wed to Jackson for three years.
In his only public comments on the subject, Klein said that "to the best of his knowledge" he is not their father. But he did admit donating sperm to MJ.
Michael was also father to Blanket, 7, born to a different mother.
We may never know for sure, but there is a strong likelihood that the biological father of Michael Jackson's two eldest children is Dr. Arnold Klein, his lawyer says.
"Dr. Klein wanted to assert a request that he had concerns," said Kaplan (above, right). "He had an agreement with Michael Jackson that if anything happened to Michael, Dr. Klein would do what he could to see that they were protected."
Still, Arnold Klein does not want to challenge the Katherine Jackson's guardianship of the kids, and won't submit to a DNA test, according to Kaplan.
"It would serve no helpful purpose for the children to be distracted from believing Michael Jackson is not the father in every possibility," he said.
"It is not something Dr. Klein feels he is interested to establish. It is not going to help the children," he says, "other than to solve the answered question, which is a selfish motive to see who the ultimate provider of the 13 chromosomes [is]."
"Katherine Jackson is responsible for the decisions and upbringing of the children," Kaplan says. "His concerns were the influence of people around her."
Kaplan did not name names, but is obviously talking about Joe Jackson, Michael's supremely shady and abusive father (who lives apart from Katherine).
Another longtime friend, Mark Lester, also came forward to admit he gave Jackson sperm in the '90s that he thinks may have been used to create Paris.