It mentions IG-88, “Tuckuss”, Dengar, Bossk, and Boba Fett all by name:
The group standing before Vader is a bizarre array of galactic fortune hunters: there is BOSSK, a slimy, tentacled monster with two huge, bloodshot eyes in a soft baggy face; TUCKUSS and DENGAR, two battle-scarred, mangy human types; IG-88, a battered, tarnished chrome war droid; and BOBA FETT, a man in a weapon-covered armored space suit.