Over the years, as Riggs and Murtaugh dealt with crooked cops, Asian crime lords and South African drug smugglers, the Lethal Weapon family grew.
I’m not sure he’d also come back for Lethal Weapon 5.
At the time of the discussion surrounding Lethal Weapon 5, no other cast members beyond Mel Gibson and Danny Glover had been attached to the sequel.
Though, if Lethal Weapon 5 was going to follow the pattern established by the other movies in the franchise, we can expect director Richard Donner to try and bring back familiar faces such as Rene Russo (who plays Riggs’ wife), Chris Rock (as Murtaugh’s son-in-law) and possibly even Joe Pesci.