The 2021 Tweed Heads Seagulls MM Cup squad has three members of the 2020 Brisbane Grammar School First XV rugby side in its squad in Campbell Watchairs, Kuse Remine and JT Manuofetoa.
To add to the number, another squad member, being Connor Te Kani was part of the Brisbane Grammar School First XV side in 2019 before spending 2020 at Keebra Park.