The martial arts fighter accused of punching Daniel Christie in Sydney's Kings Cross has been charged with murder following the teenager's death in hospital.
Shaun McNeil, 25, was arrested in the popular entertainment precinct after allegedly punching the 18-year-old on New Year's Eve, and leaving him in a critical condition in St Vincent's Hospital.
On Saturday, after 11 days in hospital, Mr Christie's life support was turned off.
Police on Monday charged McNeil, who has been in custody, with murder.
The labourer and self-proclaimed martial arts practitioner had already been charged with maliciously inflicting grievous bodily harm, assault occasioning actual bodily harm and three counts of common assault.
Police allege McNeil hit three young men before targeting Mr Christie and his brother, Peter, when the other young men tried to hide behind them.
McNeil is due to appear before Central Local Court on Tuesday.
Following Mr Christie's death on Saturday, NSW Attorney-General Greg Smith said he had asked the acting Director of Public Prosecutions to consider whether a murder charge was more appropriate.
Mr Smith said he had asked the DPP to determine "if murder charges are appropriate in light of the evidence, and in light of the alleged offender's reported martial arts experience."
Mr Christie's family released a statement shortly after his death, describing him as a "beacon of morality".
"His death has left us feeling completely destroyed and has torn a hole in the wider community in which he was involved," they said.
"No family should be forced to deal with this situation, however we are not the first and we fear that we won't be the last."
Mr Christie was punched in almost the same location as 18-year-old Thomas Kelly who was fatally struck by one punch in July 2012.
Both attacks have prompted growing calls for tougher sentencing for alcohol-related violence.
On Monday, Mr Kelly's father Ralph delivered a petition with 132,000 signatures to the NSW government calling for tougher sentencing laws for alcohol-related violence.
Following Mr Christie's assault, the petition was updated to call for alcohol and drug intoxication to be identified as a "mandatory aggravating factor" in sentencing.