Santorini: Tides of Poseidon contains 17 characters:

Achilles
Agamemnon
Ares
Charybdis
Clio
Echo
Enodia
Gaea
Hephaestus
Hippolyta
Melpomene
Moros
Odysseus
Poseidon
Proteus
Pythia
Siren


It also contains 2 mode cards:

Circe's Curse
Trojan War



Playing Time: 30 Minutes
Player Count: 2-4