Doppelganger
Doppelganger | |||||||
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Critter | |||||||
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Role | Psionic Apparition Bilocation summon | ||||||
Location | Silent Isle | ||||||
Abilities | True-Sight Deals irresistible mental damage Impervious to physical damage Disappears after 5 turns | ||||||
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Doppelgangers are hazy psionic apparitions that superficially resemble a cloaked copy of their target.
Silent Isle
Doppelgangers are first encountered on Silent Isle, after being hit by a Strange Feeling a few times. They cannot be damaged by any conventional means, only by mental psionic damage. However, they disappear after 5 turns.
Bilocation
The player can also summon doppelgangers of human enemies with Bilocation psionic ability, which powerful mind controllers may learn from the Mysterious Pillars in Silent Isle (requires 7 will and Psi Empathy).
They are otherwise very similar to their Silent Isle counterparts, but their damage increases with the player's effective Thought Control skill.
Fighting tactics
Doppelgangers have low health, but they resist almost all forms of damage, and can only be directly harmed with Neural Overload. They have True-Sight, thus cannot be affected by Neurovisual Disruption. They are immune to most status effects, but not to fear from Frighten, and can be incapacitated with Mental Breakdown.
Technically they can be intimidated with Yell, but since they don't rely on offensive skills this won't have any benefit. Enrage works on them, but it is similarly useless, since Doppelgangers don't change targets. While Bilocation can also be successfully used, Doppelgangers fully resist damage done by Doppelgangers.
Although Locus of Control gives immunity against Bilocation, it does not protect against the mental damage of Doppelgangers. Resolve reduces damage received from doppelgangers from version 1.1.0.5 onwards.
Even though the damage they deal targets the mind and so bypasses shields and armors, it is delivered through normal melee attacks and can be dodged.