Joining Williams in the squad are his namesake, Rhys, centres Tom Shanklin and Iestyn Harris and hooker Gareth Williams. The squad of 31 will be reduced to the required 30 on 10 September with one of the four hookers provisionally named having to be withdrawn/
Hansen said, "That is due to a few injury worries we are having which will be resolved prior to the final registration date."
Other Blues' stars have been less fortunate in Hansen's final selection. Both Robinson brothers, Jamie and Nick, have missed out as has another vetern of the 1999 campaign, prop Ben Evans.
Craig Morgan and Ryan Powell were not considered because of injuries.