Kornalus

 is an Altmer mage. He lives and works in Harmugstahl. He conducts experiments on Frostbite Spiders, enchanting them so the spiders can do frost, shock and fire damage.

Kornalus is a combat mage and uses fire/frost/shock spells. During the fight, he fights alone. The spiders in the last room are sealed behind bars. However, the player can free the spiders via a nearby lever, and they will then aid the player in the fight. Once Frey is killed, any spiders that are still alive will then attack the player. Kornalus may also be a relative of Mercer.

He drops Kornalus Frey's Key.

Appearances

 * The Elder Scrolls V: Skyrim