The 21-year-old has been named skipper for the side which also included fellow first-grade regulars Blake Green, Ken Maumalo, Agnatius Paasi and Leeson Ah Mau.
Papali'i made his debut for the club as an 18-year-old in 2018, clocking up 48 NRL games since, while also being capped by Toa Samoa and the Kiwis.
The squad also features a host of exciting talent including under-20 players Paul Turner, Rocco Berry, Edward Kosi and hooker Temple Kalepo.