Vaelastrasz is a Red Dragon who is also known as Vaelan in human form. Vaelastrasz has sworn to hunt Nefarian until the end of his days. After aiding players in defeating the false orc leader, Rend Blackhand, Vaelastrasz journied to find his nemesis above the Blackrock Spire. He faced Nefarian in his lair, The Blackwing Lair, and was wounded severely during the battle. Nefarian used his own blood in an arcane ritual to corrupt the younger Red Dragon. Nefarian then used Vaelstrasz against the heroes who came to kill him.

Appears in World of Warcraft in the Lower Blackrock Spire, Upper Blackrock Spire and Blackwing Lair instances.