Voiced by Michael Sinterniklaas

Lucius is very kind and gentle to the other characters, often expressing the faith of Saint Elimine. He almost never conveys anger towards any of them. This includes aggressive and violent people such as Karel, if he interacts with him in their Support Conversation. Likewise, he tries to help others he deems to be suffering, and sometimes at the expense of his own health; Lucius suffers from a spiritual illness, which afflicts him when he offers relief to people that are emotionally tormented. This makes Raven no exception, who Lucius tries to turn away from blindly taking revenge on Ostia for the destruction of House Cornwell.

Lucius' tenderness also seems to extend to those who have also caused him grief. He is quick to forgive Renault for the murder of his father, and empathizes with his regret. However, Lucius can also be very outspoken and stubborn. He refuses to withdraw when Raven tells him to stop following him and leave the battlefield. Similarly, he does not stop to badger his friend about his grudge against Ostia. Raven remarks in their A Support he does not want to marry, because Lucius jabbers enough at him.