So I was thinking about the medic perk 25 Airborne Agent and the Freezethrower as well as the sharpshooter's grenades. What if there was a boss that used all three of them? It would have the Airborne Agent going off regular but instead of healing the effect would be to freeze nearby players. It would have a ranged weapon that performed like the freezethrower but with more damage and longer freezing, and it would shoot freezing grenades as well. So weapon cycle would be similar to the patriarch with ranged weapon attack (which could also shoot mutiple freeze grenades), mid range attack with the freezing gun (maybe freezing projectiles like shotgun blasts) and for close quarters the defensive freezing gas. None of his attacks would affect Zeds.