The canon events, thereof. I'll post what info is known...
A new character is played as, who starts with 30 HP. Ignis is a boss and a partner; other partners are: a male Dark Elf 'Alucard Uzumaki', a male Avianoid that Pteriforever apparently names, a female Felinoid named 'Schelaine de Meow'.
The protagonist's gender has yet to be chosen by Ariana, but alfasketer can pick hair colour, while AuroraDash can pick the race.