Mel B’s lawyers have accused her husband Stephen Belafonte of posing a danger to his five-year-old daughter due to his “extensive criminal history" and links to the porn industry.
At a court hearing in Los Angeles, Belafonte was accused of once inviting a convicted killer who had served eight years for manslaughter into the family home, allowing him to sleep in his daughter Madison's bed.
Former Spice Girl Mel B - whose real name is Melanie Brown - was granted a temporary restraining order against her estranged husband earlier this month after accusing him of physical abuse.
A Los Angeles judge granted the order after the 41-year-old singer filed court documents claiming Belafonte abused her physically and emotionally throughout their 10-year marriage.
In the latest hearing, on visitation rights, the judge indicated he would allow Belafonte to see his daughter under supervision.
Ms Brown's lawyer told the court Belafonte was "involved in adult pornography" and the "importation of women from other countries" to work in the industry as well as "possible money laundering".
He described Belafonte as "a convicted domestic violence offender" and said they had "credible evidence that he had a firearm in his possession which is against federal law".
Belafonte's lawyers branded the list of allegations "outrageous and unfounded", and "nothing more than a smear campaign".
Ms Brown has three children - her daughter with Belafonte and two daughters from previous relationships with dancer Jimmy Gulzar and Eddie Murphy.
Belafonte also has another daughter from a previous relationship.
The couple, who married in Las Vegas in 2007, separated just after Christmas, with Brown filing for divorce on 20 March citing "irreconcilable differences".
The divorce trial - which is expected to last 10 to 15 days - will take place later this year.