All five Titans players have been stood down indefinitely by the club and issued with notices to appear in court in relation to drug offences.
They could face a minimum four-year, worldwide ban from sport if they are found guilty of cocaine supply charges.
A guilty ruling could then see them face punishments from the anti-doping body WADA which could potentially end their playing careers in any major sporting code around the world.
Sydney's Daily Telegraph reports that under section 2.7 of the WADA code, supplying prohibited substances to a third party is considered "trafficking" and carries with it a minimum four-year ban from all sport.
Meanwhile, the Titans have launched their own investigation that could see players being sacked immediately regardless of the legal result.
Bird is the player most likely to have his contract torn up, as he is already on his last warning at the Titans after he was stripped of his captaincy in December, for urinating in public during his wedding celebrations in Byron Bay.
Taylor, Bird, Faifai Loa and Vickery are all expected to face Southport Magistrates Court on March 9 while Dowling, Falloon, Hunt and an unnamed 22-year-old woman are due in court on March 5.
It is at the discretion of the NRL and the Titans whether the five players are reinstated after they appear in court in two weeks or are given a provisional ban until the court matter is completed.
The story broke on Friday when Hunt was the first charged. Hunt was the previous day named to start for the Reds in their 18-6 win over the Force on Saturday. He has been stood down by the Super Rugby franchise.
The Titans begin the NRL campaign at home with a round one clash against Wests Tigers at Cbus Super Stadium on Saturday, March 7.
Queensland Drugs Scandal - The Big Players:
Greg Bird - Charged with two counts of supplying cocaine.
Dave Taylor - Charged with one count of possession and one count of supplying cocaine.
Beau Falloon - Charged with four counts of supplying cocaine.
Jamie Dowling - Charged with two counts of supplying cocaine.
Kalifa Faifai Loa - Charged with one count of supplying cocaine.
Others charged:
Joe Vickery - Former Titans squad member was also charged, with seven counts of supplying cocaine.
Karmichael Hunt - Queensland Reds player charged with four counts of supplying cocaine.
Jason Smith - Former league international charged with trafficking 280g of cocaine between June and December 2014.
Matt Seers - Former NRL player charged with 15 counts of supplying a dangerous drug and one count of trafficking a dangerous drug.