Gus and Jerbo are Luz's only close friends who don't appear.
King's line about having a connection to dragons would eventually be realized later in Book 2 during the "Human Realm" arc;
Eda would be revealed to have once been friends with the Susan and Jonathan Long, the former being from a family of dragons.
The "Submit your own OC" contest would result in the introduction of the Drakescale family, who would turn out to be a branch family of the extended Clawthorne Clan.
