The five men allegedly used drugs together before Mr Knowles, Mr Kratzmann and Mr Soper-Lagas demanded property from Mr English and his friend at knifepoint.
Mr English allegedly fell from the balcony during the incident. His friend is understood to have passed out under the influence of the drugs.
His family issued a statement on Sunday asking for privacy.
“Our family is devastated by this tragedy and respectfully ask for privacy as the police investigation into the circumstances continues,” the family said.
Queensland Premier Annastacia Palaszczuk described the weekend’s incident as “absolutely awful”.
“[It is] tragic … very concerning, and there is a family that is grieving,” she said.
“It’s awful, absolutely awful. I just urge everyone, especially young people, to please be safe.”
Police said on Saturday that officers found four male teens in a unit in “a semi-conscious state after consuming prescription drugs” when they arrived at the scene.
The Queensland Ambulance Service said paramedics took four patients to Robina Hospital on Saturday, all of whom were in a stable condition.
Mr Knowles and Mr Kratzmann’s cases were briefly mentioned in Brisbane Magistrates Court on Monday, where they were adjourned for a committal call over in Southport Magistrates Court on August 4.
Mr Soper-Lagas’ case was mentioned in Beenleigh Magistrate’s Court. It was adjourned to be re-mentioned on Tuesday in the same court.
All three men are also charged with two counts of armed robbery and two counts of deprivation of liberty.
Matt Dennien is a reporter with Brisbane Times.