Costa, Billy
From Srafopedia
Ma Costa's son, a Gyptian friend of Lyra's who is taken by the Gobblers to Bolvangar and helps Lyra break all the captured children out of Bolvangar.
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In the Movie Adaption
In the movie adaption, Billy Costa and Tony Makarios are merged, therefore the character is named Billy Costa but his dæmon is called Ratter (the dæmon of Tony Makarios). Lyra finds Billy Costa without his dæmon in a barn and brings him back to the Gyptians and his mother, shortly before they are attacked by the Samoyeds.
