Here are the Main Stage Characters listed by Player.
Glyff: Altair The Thrice Reborn
J: Naberius the Transcendant
Joy: Joy The Ascended Archmage
Soneca: Dumah, The stillness of death
Silverbear: Vivian Ruby Cates ab Nofret
Earthdawn: Gabriel Montague
ProfessorPanic: William Barclay the Ascendant Chronomage
Hoots: The Dragon of Starke
JP: Jeremy Cambell