The Mighty Thor, Vol. 1: Thunder in Her VeinsJason AaronThor by Jason Aaron, book 7

Characters in The Mighty Thor, Vol. 1: Thunder in Her Veins

3 characters, main characters first.

Supporting characters

Loki (Marvel)
Also in Original Sin: Thor & Loki: The Tenth Realm, War of the Realms
Jane Foster
Also in The Mighty Thor, Vol. 4: The War Thor, War of the Realms
Frigga (Marvel)
Also in Thor, Vol. 1: The Goddess of Thunder, War of the Realms