what does the “Halfy" mean in following two different sentences？
1.Roar hopped to his feet. “Not your weapon, Halfy.”……2.When they finished, Roar stopped her. “You have to pay me, Halfy.”“Pay you?” she asked. “With what?”
“A song.”
（Roar has been teaching her practice the blade.
she is not the disabled）

Question

what does the “Halfy" mean in following two different sentences？
1.Roar hopped to his feet. “Not your weapon, Halfy.”……2.When they finished, Roar stopped her. “You have to pay me, Halfy.”“Pay you?” she asked. “With what?”
“A song.”
（Roar has been teaching her practice the blade. 
she is not the disabled）

Answer

AllenT may have a good answer.  Depends on the book.  It could also be a slur, a reference to the person's lack of ability (Halfy = having half the expected ability), or a reference to the person's size (Halfy = having half the expected height), as in J.R.R. Tolkein's  "Lord or the Rings" trilogy, when the hobbit characters are called "half-lings" by people of normal, human size.

Again, it depends on the book.

Answer

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Answer

Halfy would appear to be the second person's or character's name or nickname.  The sentences are between the two people/characters Roar and Halfy.