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Characters in Hades and Hades II are all taken from Greek mythology, although some with tweaks to fit the story. Most characters only provide conversation and possibly a Keepsake if they are given Nectar. Gods will also grant you a Boon if they are found during an escape attempt.

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Artemis - Hades Wiki

Moros - Hades Wiki

Shield of Chaos Hades+BreezeWiki

Apollo Hades+BreezeWiki

Folio Draft 2 for ARC30003 by DionisiosM - Issuu

Melinoë/Gallery - Hades Wiki

Dionysus - Hades Wiki

Megaera Hades+BreezeWiki

Asterius - Hades Wiki

REFERENCES - Issuu