function Actor:psiStealthPower()
        if not self.psi_stealth_add and not self.psi_stealth_mult then return end
        return self:combatMindpower(self.psi_stealth_mult, self.psi_stealth_add)
    end

    function Actor:psiStealthMimic()
        return self.psi_stealth_mimic
    end

    local canSeeNoCache = Actor.canSeeNoCache
    function Actor:canSeeNoCache(actor, def, def_pct)
        local see, chance = canSeeNoCache(self, actor, def, def_pct)
        if not see then return see, chance end
        if actor == self then return see, chance end

        local psi_stealth = actor.psiStealthPower and actor:psiStealthPower()
        if psi_stealth then
            local hit, psi_chance = self:checkHit(self:combatMentalResist(), psi_stealth)
            -- Only do mimics if it's the player trying to see them.
            if self.player and actor:psiStealthMimic() then
                game:onTickEnd(function() actor:setMimicState(not hit) end)
                return true, 100
            else
                return hit, chance * psi_chance * 0.01
            end
        end

        return see, chance
    end