During The Golem in Honnleath quest, the Warden meets Matthias in Wilhelm's Cellar. He has activated his father's defenses to protect survivors from the darkspawn attacking the village, but his daughter Amalia has gone missing. He will ask the Warden to find her, in exchange for Shale's correct activation phrase.Regardless of the Warden's decision, Matthias will tell the correct command phrase once they return from the cellar. However, if afterwards Matthias runs to rescue his daughter, he will be possessed by the desire demon.
- He shows that he can manipulate the magical defenses of his father, implying he may have some knowledge of magic. Whether he is a mage or not is uncertain.