Terask is an evil being of great power. He challenged Fyora in battle, and beat her, sealing the Queen in her own castle. Terask then proclaimed himself King of Faerieland. He was eventually defeated by Rohane and his crew, after he assumed his true form.
So, you are the puny little weaklings who have caused so much trouble. I should have known better than to let my minions try to defeat you -- I should have hunted you down myself. But now you've come right to me... and you'll never escape. Let's see what you've got.
The Terask in Neoquest II was a computer virus, but a real King Terask once attempted a coup in Faerieland in a similar fashion.