They will try to escape via a psionic rift after a few turns or if they take too much damage.Neutral actions like reloading will not trigger a Ruler Reaction. Rulers will also only make a Ruler Reaction move after an XCOM soldier within their sight moves or attacks. In the expansion, each Ruler will only begin appearing on missions after they have first been encountered during an assault on an Avatar Project facility. In XCOM 2: War of the Chosen, the Rulers' behaviors were altered to make them more manageable to deal with.They can perform one action after every action by one of the player's units.Strong powers and abilities derived from the basic enemy they evolved from.A huge amount of health compared to the stage of the game that the player typically meets them.The next ruler typically won't appear until the previous one is killed or successfully escaped. The first to appear is the Viper King, then the Berserker Queen and the last is the Archon King. The player cannot encounter multiple rulers in the same mission. The three Alien Rulers introduced in the DLC are: the Viper King, the Berserker Queen and the Archon King.
Alien Rulers are new enemies added to XCOM 2 through the Alien Hunters DLC.
