Original Sin: Thor & Loki: The Tenth RealmJason AaronThor by Jason Aaron, book 4.5

Characters in Original Sin: Thor & Loki: The Tenth Realm

3 characters, main characters first.

Supporting characters

Thor (Marvel)
Also in Thor: God of Thunder, Vol. 2: Godbomb, Thor, Vol. 1: The Goddess of Thunder, War of the Realms
Loki (Marvel)
Also in The Mighty Thor, Vol. 1: Thunder in Her Veins, War of the Realms
Odin (Marvel)
Also in Thor, Vol. 1: The Goddess of Thunder, War of the Realms