The court confirmed he pleaded not guilty to 12 counts of rape and other charges including reckless conduct endangering life, attempted rape and sexual assault.
Mr Russo was remanded in custody to appear before the County Court in February, when a date for his trial will be set.
A previous court appearance was told he has mental health problems, an acquired brain injury and an intellectual disability.
His lawyers also previously indicated he could argue he was mentally impaired at the time, in order to contest the charges against him.
If you or anyone you know needs support, you can contact the National Sexual Assault, Domestic and Family Violence Counselling Service on 1800RESPECT (1800 737 732), Lifeline on 131 114, or Beyond Blue on 1300 224 636.