* "The Kid" (Unnamed): The protagonist, a teenage boy who is homeless and surviving on the streets. He is tough, resourceful, and has a strong sense of survival.
* Skellig: A mysterious and strange creature the Kid discovers living in a derelict garage. The creature is both frightening and fascinating, and plays a crucial role in the Kid's journey.
* Michael: The Kid's younger brother, who is struggling to cope with his own anxieties and fears.
* Mina: A young girl who befriends the Kid and offers him kindness and support.
* The "Peddler" (Unnamed): An older man who sells things on the street. He is a mysterious figure who appears to know more than he lets on.
* The Kid's Mother (Unnamed): The Kid's mother is absent from his life, but he often thinks about her and her absence.
* The Kid's Father (Unnamed): The Kid's father is also absent from his life and has a troubled past.
There are other minor characters who play roles in the story, but these are the most prominent.