Kroy Biermann Jr. 's lawyer is firing back at claims prosecutors made about the 15-year-old in court ... namely, allegations that KJ had videos on his phone showing him having sex with an underage family member.
Source: [TMZ](https://www.tmz.com/2026/09/11/kim-zolciak-son-kj-lawyer-downplays-alleged-sex-videos-with-underage-relative/)