Heather is a character that appeared in the Riders of Berk series.

She's a thin girl that causes Astrid's jealousy to burst out because Hiccup begins to trust her, like the other dragon riders do. Astrid is sure that there is something wrong with her and never trusts her. Her worryings was right when heather steals Stormfly and the Book of Dragon, flying straight to Alvin's Outcast island. Stormfly goes back to her true rider but the Book of Dragon is in Alvin's hands. Heather is brought back to Berk, where she explains how she was forced to gain Hiccup's trust to get the book since Alvin keeps hostage her parents and this was the only way to get them back. Nobody believes her but she manages to escape and takes Stormfly again, this time to get the Book of Dragons back. She is successful and Astrid, dressed as her, has saved her parents. The two became friends and Heather leaves Berk happy with her parents.