All in the family (from left to right):

Hera: Zeus' lover
Zeus: Bo's aunt and Hades' bother
Iris (The Nix): Bo's cousin, Hades' neice, Zeus and Hera's daughter
Persephone: Zeus' daughter, Bo's one-time lover, Bo's cousin and stopmom, Hades' former prisoner
Tamsin: Bo's ex-lover, had Hades' baby, Bo's psuedo stepmom
Dagny: Bo's half sister, Hade's daughter, Tamsin's daughter
Hades: Bo's evil dad
Bo: Head Fae in charge
Aife: Bo's mom, Hades' former prisoner, Trick/Isabeu's daughter
Trick: Bo's grandpa
Isabeu: Bo's grandma