The Broncos nines squad also features captaincy front-runner Darius Boyd, half Anthony Milford, hooker Andrew McCullough and Queensland winger Corey Oates.
As well as Marshall, the Broncos have selected NZ internationals Jordan Kahu and Adam Blair, and Australian Kangaroos forward Matt Gillett.
The 18-man squad also features youngsters rewarded for a fine pre-season - Jonus Pearson, Jaydn Su'A, Frank Molo, Alex Barr, Gerome Burns, Mitch Cronin, Sam Lavea, Matiu Love-Henry and Gehamat Shibasaki.
Broncos' Nines squad: Alex Barr, Adam Blair, Darius Boyd, Gerome Burns, Mitch Cronin, Matt Gillett, Jordan Kahu, Sam Lavea, Matiu Love-Henry, Benji Marshall, Andrew McCullough, Anthony Milford, Francis Molo, Corey Oates, Jonus Pearson, James Roberts, Gehamat Shibasaki, Jaydn Su'A.