Vasteros

Vasteros, "The Craven", was an Archmage of Haven during the beginning of the Zythan Civil Wars. He was loyal to the Royal Dragon Strazakira, and was an Arcane Specialist.
In the mid 10th century, the dragon rulers of Haven, Vercassetir and Strazakira, had a disagreement, which forced Vercassetir to leave. Some say he was actually exiled. Many years later it came to the attention of Strazakira that Vercassetir was spreading dissent and forming his own kingdom in northern Dragonvale. In order to quell this before it could become a major threat, she sent an army, lead by her most trusted archmages; Vasteros and Artura. This was mostly just to intimidate Vercassetorix and his followers.
However, as they marched, the army was suddenly ambushed at Carmacea by a mysterious army, lead by a powerful unnamed mage, referred to in history only as the "Mystery King". The battle was a brutal ambush. Artura fought bravely, but Vasteros seemingly fled. After the battle, neither Vasteros nor the Mystery King were seen again.
The loss at the Battle of Carmacea is regarded as the cause for the following Zythan Civil Wars. Strazakira's forces were depleted and she had lost two archmages, allowing Vercassetir to build up his army. For this reason, Vasteros is widely regarded with disdain, and many believe that they could have won the battle, and therefore prevented the wars, if he hadn't fled.