Here are a list of cannons available! Note: strikes mean they are not available!
Roman Characters:
Half-Bloods
Hazel Levesque
Reyna
Jason Grace
Frank Xiang
Faun
Dakota
Other
Luppa
Greek Characters:
Half-Bloods
Percy Jackson
Annabeth Chase
Nico di Angelo
Thalia Grace
Clarisse La Rue
Travis Stoll
Connor Stoll
Chris Rodriguez
Katie Gardner
Jake Mason
Will Solace
Malcolm [please add surname when applying]
Mark [please add surname when applying]
Sherman [please add surname when applying]
Kayla [please add surname when applying]
Laurel [please add surname when applying]
Jason [please add surname when applying]
Pollux [please add surname when applying]
Phoebe [please add surname when applying]
Gods, Goddesses and Other Immortals (Gods play both Roman and Greek characters)
Dionysus
Zeus
Hera
Poseidon
Hades
Ares
Athena
Aphrodite
Artemis
Apollo
Hermes
Hephaestus
Demeter
Hestia
Kronos
Janus
Atlas
Morpheus
*Hecate*
Aeolus
Terpsichore
Boreas
Satyrs
Grover Underwood
Nymphs
Juniper
Centaurs
Chiron Kentavros
PM Moderator if your character has not been updated, Roman list coming soon, credit to Half-Blood Hill for the Greek list.