Mostrasz is a red dragon in human form found outside the central tree within the Vermillion Redoubt[[:File:|[, ]]] in the Twilight Highlands. He assists rogues in the Fangs of the Father quest line, flying them to Ravenholdt Manor in Hillsbrad Foothills and helping them to infiltrate the manor. The Ravenholdt rogues and assassins had in their possession a black dragon egg that was uncorrupted by Deathwing, stealing it from the red dragonflight for purposes unknown. Mostrasz helps players discover that purpose, and for his efforts Wrathion has his legs broken.