Plural of Hercules; multiple persons of extraordinary strength or ability, or multiple representations of the Hercules figure.
From Hercules (the mythological figure) plus the standard English plural suffix '-es.' Can refer to different artistic depictions of the god or metaphorically to multiple mighty individuals.
Museums have hundreds of 'Herculeses' from different eras—ancient coins show him as a bearded Greek god, Renaissance paintings show him as a Renaissance ideal, and modern statues reimagine him constantly!
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