Another crew member for Mylar to work with.
Lucas’ job is to keep watch for pirates and keep track of their destination, among other things.
Mylar as the navigator will work closely with him in order to plan routes.
He’s rather solitary, keeping to himself. Since he spends so much time away from the others. Smoking and daydreaming. But Mylar sometimes keeps him company. Though the captain doesn’t like her being up there because she’ll signal all the pirates nearby right to them.