Ravens are large black birds similar in appearance to crows. They are present in both Greek and Norse mythology.
Magnus Chase and the Gods of Asgard[]
Ravens are seen through Hotel Valhalla. They usually order Einherjar to the feast hall or drag the unwilling to battle practice. They are one of Odin’s sacred animals, his messengers, Hugin and Munin are also ravens.
The Trials of Apollo[]
The Tyrant's Tomb[]
A conspiracy of giant ravens attack Apollo, Meg McCaffrey, and Reyna Ramírez-Arellano as the three climb Sutro Tower. When Apollo explains he punished ravens by turning them from white to black as punishment for informing him that his pregnant girlfriend Koronis was cheating on him and that he had Artemis kill her and save their child, Asclepius, the girls are outraged. Eventually, Apolllo manages to repel them by singing.
After acquiring the breath of Harpocrates, the conspiracy attacks the three of them again. They are eventually driven off after Apollo manages to shoot several of them down.
Sikander Aziz series[]
Fury of the Dragon Goddess[]
Rabisu tells Sikander Aziz that it's too dangerous to visit the Tower of London because the ravens are gone. The demon explains that the ravens are the protectors of the kingdom and if they leave, then the kingdom's doomed.
After Tiamat's death and the Tablet of Destinies being wiped clean, six ravens join Sik on the banks of the River Thames and Sik realizes that the guardians of the kingdom are back. The ravens watch Sik use the tablet to resurrect his brother and bob their heads as if they know what Sik is planning and they approve of it.