What stands before you is not human, but a mechanical facsimile.
Android thinkers are the secret overlords of the apocalypse. They intentionally make themselves look like other androids, proving indistinguishable without technology. But their brains are uniquely suited to controlling other androids and robots, which makes them a danger to any foe who should cross them. Many of the robots and androids still functioning in the apocalypse are due to the thinkers, who view constructs as an evolutionary lifeform that must be nourished until the current fauna completely dies out.
Medium construct (android)
Armor Class 15 (natural armor)
Hit Points 65 (10d8+20)
Speed 30 ft.
STR | DEX | CON | INT | WIS | CHA
16 (+3) | 14 (+2) | 14 (+2) | 20 (+5) | 16 (+3) | 14 (+2)
Saving Throws Int +8, Wis +6, Cha +5
Damage Resistances cold, fire
Damage Immunities necrotic, poison
Condition Immunities exhaustion, poisoned
Senses darkvision 60 ft., passive Perception 16
Challenge 5 (1,800 XP)
Auxiliary Generator. If damage reduces the android to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the android drops to 10 hit points instead.
One Mind. As long as they are within 60 ft. of each other, all robot or android allies of the thinker have advantage on Intelligence, Wisdom and Charisma saving throws.
Slam. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 10 (2d6+3) bludgeoning damage.
Laser Burst (Recharge 5-6). The android fires lasers in all directions. Each creature of its choice in a 10-foot radius must make a DC 13 Dexterity saving throw, taking 14 (4d6) radiant damage on a failed save, or half as much damage on a successful one.
Enslave Construct (3/Day). The android targets one construct it can see within 30 feet of it. The target must succeed on a DC 14 Wisdom saving throw or be charmed by the android until the android dies or until it is on a different plane of existence from the target. The charmed target is under the android's control and can't take reactions, and the android and the target can communicate telepathically with each other over any distance. Whenever the charmed target takes damage, the target can repeat the saving throw. On a success, the effect ends. No more than once every 24 hours, the target can also repeat the saving throw when it is at least 1 mile away from the android.
Brain Bolt. Ranged Weapon Attack: +5 to hit, range 60 ft., one target. Hit: 10 (3d6) psychic damage.