Antea Derris was the eldest daughter of Pyral Pratt but she didn't get along with her family and thus rarely contacted them, and then only her father. She was a "professional" cheat, usually hiding under the alias Etna Asiderr. She was responsible for the theft of Geralt's silver and steel swords as well as selling a fake Viroledan blade to Dandelion. Later, when a storm hit the City of Kerack, she died trying to save children with Geralt.
- Her alias is an anagram of her real name.