Bryagh (voiced by the late James Gregory) is the secondary antagonist of The Flight of Dragons.
- Bryagh will become Jeffrey, Jaden and Hiccup's enemy in Jeffrey, Jaden, Hiccup & Friends' Storm Adventures of The Flight of Dragons.
- Jeffrey develops a rivalry with Bryagh because he hates Bryagh's cruelty and the fact that he eats dragon eggs. Jeffrey also gives Bryagh a scar on his chest that Bryagh wants revenge on Jeffrey for.
- Bryagh hates Jeffrey for "being weak", not being a "true dragon", and not willing to kill him when he has the chance to.
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