Leonard Sykes shows up as a Boss-level NPC of the level of the mission owner, unless soloing, in which case he will be a Lieutenant and his hit points will be lower. He has "Hapless Citizen" faction, has no attacks and must be escorted to the mission exit. Once you capture him, three waves of Cage Consortium Guards will ambush you. Leonard Sykes can be found again later in the Story Arc, though not anymore as a mere kidnapping victim.