"The Supersonic", is first seen in Jaya, shooting down seagulls from a distance so far that the Straw Hat Pirates, who were watching, couldn't even see the island he was on. Van Auger appears calm and analytic even during battle.
Auger's name may also have something to do with the Latin word "auger", which is term for a fortune teller who studies the flights of birds to determine the future. This could be symbolic due to the fact that we first see Auger shooting down birds and explaining that it was "fate" for the bird to be killed.
"Auge", means eye in German. This might be another reason for his name.