Characters with (or items that grants their wielders) the power to determine what superpowers others have, track the movements of superpowered individuals, or just simply determine if another individual has powers (without necessarily knowing what those powers actually are).
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Hope Summers (Earth-616) -
Onslaught (Psychic Entity) (Earth-616) -
Sage (Earth-616) -
Everett Thomas (Earth-616) -
Nathan Summers (Stryfe) (Earth-4935) -
Caliban (Earth-616) -
Jonathan Richards (Earth-967) -
Paradox (Strange) (Earth-616)
All items (55)
A
C
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Caliban (Earth-295)
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Caliban (Earth-616)
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Caliban (Earth-11052)
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Caliban (Earth-58163)
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Caliban (Earth-91240)
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Caliban (Earth-TRN064)
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Callisto (Earth-10005)
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Cerebra (A.I.) (Earth-616)
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Cerebra (Mutant Detector)
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Cerebrax (Earth-616)
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Cerebro (Earth-10102)
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Cerebro (Founder) (Earth-616)
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Claudette and Nicole St. Croix (Earth-295)
M
N
S
