Karoo

Karoo is a bird-like spirit guide who comes to Kai several times to give her warnings and advice. He is Nonno's guide, and his advice is aimed to protect the man and improve his health. Kai does not learn about his true identity until much later, and at first she thinks he is a dream.

Karoo has two forms: one tall, humanoid 'Birdman' form, and one small bird-like form. His face is always a different color to the rest of him, as though he's wearing a mask, and his feathers are dark.

For all that he is Nonno's spirit guide, he uses a name that Kai gave him. He seems to have been acting on his own at least part of the time while reaching out to Kai.