His mother, Uiatu "Joan" Taufua, was convicted and sentenced to nine months prison for assaulting two security guards at The Star casino in July 2022.

[12] She was subsequently charged with three counts of manslaughter and dangerous operation of a motor vehicle, evading police and driving without a driver's licence.

[13] In May 2024, Haas's father Gregor Johann (March 23, 1978), alleged Sinaloa Cartel member was arrested in the Philippines and accused of running drugs in Indonesia.

[14] In September 2024, Indonesian National Police IRD Head General Krishna Murti announced the Philippines and Indonesia discussed a Gregory Johann Hass-Alice Guo prisoner exchange.

[19] After impressing for the Broncos NYC side throughout the year, he was called in to act as an Andrew Fifita "clone" at a Queensland State of Origin opposed training session before game three of the 2017 series.

[25] Haas, while fasting for his first ever Ramadan after converting to Islam in early 2019,[26] scored the first try of his NRL career against the Sydney Roosters in round 10 on Friday 17 May 2019 at Suncorp Stadium in Brisbane.

[29][30] Haas made 21 appearances for Brisbane in the 2019 NRL season as the club finished 8th on the table and qualified for the finals.

Haas played in the club's elimination final against Parramatta which Brisbane lost 58–0 at the new Western Sydney Stadium.

Haas played 17 games for Brisbane in the 2020 NRL season as the club finished last on the table for the first time ever in their history.

In round 12 of the 2022 NRL season, Haas was booed by Brisbane supporters every time he touched the ball during the clubs victory over the Gold Coast.

[40] In round 2 of the 2024 NRL season, Haas suffered a knee injury in Brisbane's victory over South Sydney.

In 2020, he began a rivalry with long-time rival Tino Fa'asuamaleaui, after a fight broke out during the second State of Origin Game of the 2020 Series.

[45] On 19 February 2019, Haas was suspended for four matches and fined $20,000 by Brisbane after he failed to cooperate fully with the NRL integrity unit regarding an investigation into off-field incidents involving family members.