A: Yes. It says on the Sonic Tranquilizer you can ignore any Zombies you have when trying to win, so if you have the Tranquilizer, it’s as if you don’t have Larry. Although it says on Larry that he prevents victory even if the Rules or Goals say otherwise, the Tranquilizer is a Keeper, so it still works. (Unless “It’s Not Working!” is in play, of course.)