Ross Judd, 34, was charged with murdering 39-year-old Athena Georgopoulos and a 50-year-old man inside a home at Mount Waverley, in Melbourne's southeast, on Monday night.
He walked into the Melbourne Magistrates Court dock on Wednesday wearing a black T-shirt, sporting a short black beard and a mohawk-style hair cut.
During the hearing, the police prosecutor sought a 10-week extension for investigators to provide a brief of the case.
"It's a complex crime scene (with) a significant amount of DNA (to be examined)," she said.
The prosecutor also attributed the delay to the two autopsies that needed to be performed on the victims.
"One of the people was pregnant and that has resulted in the delay," she said.
"We are unable to provide a timeframe for when the DNA (examination) would be done."
Judd's defence lawyer Annie Allan said it was the 34-year-old's first time in custody and requested that he see the prison nurse to follow up on medication.
The accused stared straight ahead throughout the hearing and responded "yeah, I do" when magistrate Johanna Metcalf outlined his next court appearance details and asked if he understood.
He smiled when Ms Metcalf granted a media application to access his charges but refused other materials.
Victoria Police had received a call from a concerned neighbour at 9.20pm after hearing yelling coming from the property, Homicide Squad detective Dean Thomas said on Tuesday.
A second call was made, which suggested the incident was "more urgent", before officers arrived at 9.50pm to find the two bodies.
Police later arrested Judd, who was with two large dogs, at Westall Railway Station, about 6km from the home.
Ms Georgopoulos's mother Petty expressed her sorrow over the death of her daughter, who she said was due to give birth in four months.
"These last days you were so happy, we dreamt together about our granddaughter who you would bring into this life and suddenly all was extinguished in one night," she said in a tribute on Facebook translated from Greek.
"Even in our separation, I will never stop loving you and look forward to our reunion."
Judd will next appear at the court via video link on January 13, 2026.
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