Info from the boss: Smile entity without physical body: He cannot die and when he collides with ANY enemy troop he possesses their body to summon the real boss. Blue troop possessed by the smile entity: can summon smile minions and launches a laser beam every so often that when it kills an enemy troop it turns it into a minion. Smile Minion: When it collides with an enemy that has low life it turns it into another minion.