Olivia was surprised to hear that this burly man was actually a Sigil. She knew about the Regis's ability to tame beasts and make them their Sigils, but she had never heard of a person becoming one.
Then again, it was said that a high-level beast— or, to be accurate, a legendary beast who had lived for hundreds of years could transform into a human. Could it be that this burly man was a legendary beast? His physique and temperament did seem like one.
Good thing none of the two, Byron and Silas, had the ability to read minds. If they knew that Olivia had considered Byron to be a legendary beast, Silas might have already rolled on the floor laughing, while Byron might have fainted in shock.