I would expect that a Shrieker counts as a Turret, for the purposes of the effects, despite not being "created" in the same way as an Acolyte's Eye, for example; they can't move and their only ability is to shoot. The same can be said of a Cyclops. Interestingly, these two enemies are also classified as Vehicles.
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🤔Two enemies i can use my Vorpal/Deconstruct Belisarius-D very effectively then.