The Dragonborn encounters him during the Thieves Guild quest "Hard Answers." After taking a rubbing of Calcelmo's Stone using a piece of Charcoal and a Roll of Paper (both of which can be found in plentiful supply in the room right before the stone), Captain Aquilius will either enter the tower with three Wizard Guards, or with two Wizard Guards and Aicantar if he was not yet killed.
- "All right men, spread out and search the tower. No telling who - or what - we're dealing with here."
- "Aedra what a day." – If the Dragonborn sneaks behind him
Aicantar "Accidents like this just don't happen. Someone is trying to sabotage my uncle's research."
Aquilius "I...all right. If there is a thief, he won't leave this tower alive. But shouldn't we inform Master Calcelmo?"
Aicantar "I'll deal with my uncle. Just...go! Scour this place from top to bottom!"
- Although Aquilius is a Redguard, he has an Imperial name.
This section contains bugs related to Captain Aquilius. Before adding a bug to this list, consider the following:
- Rarely, Captain Aquilius and his men may not see the Dragonborn, even if they are not sneaking.