LaFontaine is an enigmatic antagonist to Gideon. He conducted an interrogation of Gideon subsequent to his disappearance. Although not much is known of his position or goals, he seems to be working for the established powers of the world, against Pahana. Despite previous speculation, it is highly unlikely that he is actually Don LaFontaine.

People of the Darknet
Dr. Gideon Marconi : Pahana : LaFontaine