One-One was a Bynar individual who was the sibling of another Bynar named Zero-Zero. One-One and Zero-Zero were members of Active Four. The Bynar siblings were employed as engineers and technical specialists. The pair made assisted with making a number of modifications to the SS Snipe, well beyond what was legal for a civilian freighter. One-One and Zero-Zero remained on the Snipe when the Elloran Sahde forced helm officer Yal Ixxen to life off. They both died when the Snipe was destroyed by Klingons loyal to Chancellor Martok. (ST - The Fall novel: The Poisoned Chalice)